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Dan Markel— Case Archive
personpersonLuis RiveraLuis RiveraCooperating co-defendant who testified as a prosecution witness in all four Dan Markel murder trials, giving a firsthand account from inside the car on the day of the killing.← All People
Co-conspirator

Luis Rivera

Courtroom still of Luis Rivera.

Cooperating co-defendant who testified as a prosecution witness in all four Dan Markel murder trials, giving a firsthand account from inside the car on the day of the killing.

AppearedGarcia–MagbanuaMagbanua RetrialCharlie AdelsonDonna Adelson
4,596 lines·190 proceedings·164 mentions·4 trials

About

Rivera is a recurring cooperating codefendant witness whose accounts of the Tallahassee trips, shooting, payment, and alleged recruitment were examined across four trials, alongside disputes over corroboration and reliability.

Luis Rivera testified for the State as a cooperating codefendant in Garcia–Magbanua 2019 Joint Trial, magbanua-retrial-2022, charlie-adelson-2023, and donna-adelson-2025. He described being recruited by Sigfredo Garcia, two Tallahassee trips involving surveillance, driving a Prius to Dan Markel's driveway while Garcia shot him, and receiving cash after the homicide; his accounts also addressed an alleged payment arrangement involving Katherine Magbanua. Rivera testified under a plea or cooperation agreement connected to a 19-year sentence and said he had not communicated with Adelson family members. Defense examinations repeatedly tested his memory, earlier statements, knowledge of the alleged plot, trip and gun details, communications, plea benefits, and payment account. The parties also disputed whether independent travel, rental, toll, communications, and other evidence corroborated material portions of his testimony.

Trial Record (190)

GMGarcia–MagbanuaSep 26, 2019 – Oct 11, 2019Called by prosecution

Rivera testified for the State as a cooperating codefendant, then faced extended defense cross-examination about his plea benefits, prior statements, memory, and account of the alleged events.

Day 1

Day 2

Day 3

Day 4

ProceduralRivera Cross-Examination Limits and Recollection Procedure1highlightMentioned

Summary

The court set limits for cross-examining Luis Rivera, allowed focused mental-health questioning, and established an outside-the-jury procedure for refreshing his recollection.

Mentioned in this proceeding.

Highlights (1)

procedural actionThe court set a procedure for any attempt to refresh Rivera's recollection: at the end of Garcia's cross-examination, Magbanua's cross-examination, and redirect, counsel could identify material to be read to him outside the jury's presence before the jury returned.Open in transcript →Watch this moment ▶
CrossLuis Rivera - CrossLuis RiveraSaam Zangeneh2highlights390lines spoken

Summary

Garcia's counsel challenged Rivera's memory, literacy, prior accounts, and cooperation incentives; the court admitted two defense letters and limited several questions.

Highlights (2)

impeachmentRivera acknowledged that he had previously said Garcia alone drove the June trip, but testified that he drove part of it after the State showed him a traffic citation.Open in transcript →Watch this moment ▶
Quote“You got me confused, man. Come back.”— Luis RiveraRivera said he was confused while being questioned about contacts with law enforcement before his recorded statement.Open in transcript →
CrossLuis Rivera - CrossLuis RiveraTara Kawass2highlights580lines spoken

Summary

Kawass tested Rivera's cooperation incentives, memory, and prior accounts of the alleged planning, shooting, and payment; the court denied a mistrial motion during a sidebar.

Highlights (2)

Quote“I drove over half. I didn't remember. It's been a long time, I really didn't remember. But, yeah, I did drove over half.”— Luis RiveraRivera acknowledged changing his recollection about who drove during the first trip after being shown a traffic ticket.Open in transcript →
rulingThe court denied Garcia counsel's mistrial motion after the sidebar concerning testimony that Garcia sold cocaine, while sustaining the objection to the pending follow-up question.Open in transcript →

Day 5

Day 6

ProceduralGang-Expert, Wiretap, and Dolce Vita RulingsMentioned

Summary

The court deferred the gang-expert decision, set a process for individual wiretap rulings, allowed the Dolce Vita undercover conversation subject to transcript foundation, and ordered wiretap materials shared before Monday.

Mentioned in this proceeding.

Day 7

Day 8

Day 9

Day 10

KMMagbanua RetrialMay 18, 2022 – May 27, 2022Called by prosecution

Called by the State, Rivera testified across Day 2 and Day 3, with cross-examination focused on his recollection, prior accounts, cooperation agreement, and the alleged role of Katherine Magbanua.

Day 1

Day 2

Day 3

CrossLuis Rivera - Cross (Part 2)Luis RiveraChristopher DeCoste4highlights251lines spoken

Summary

Defense challenged Rivera's shifting recollections about guns and trips; the court allowed impeachment over a prior reference to a third trip, while Rivera maintained Magbanua's involvement.

Highlights (4)

impeachmentAfter Rivera said he could not remember how many guns were brought on the murder trip, audio of his 2016 statement was played to refresh his recollection; he then answered that one gun was brought, after having testified on direct that there were two.Open in transcript →Watch this moment ▶
Quote“Yes, sir. I mean, we all make mistakes. It's been eight years. Memories -- you forget stuff. Eight years, who's going to remember?”— Luis RiveraRivera explained the change in his account of how many guns were brought on the murder trip.Open in transcript →Watch this moment ▶
testimony highlightRivera ultimately said he had come to Tallahassee twice but recalled saying that Sigfredo Garcia and King Anthony made a third trip; he said Garcia had told him about it.Open in transcript →
Quote“Now that you say it, yeah, I remember saying that. But you keep saying that I came up here three times. I only came up twice. That third trip was somebody else. You need to say the whole story. You just saying half of the thing. I said three. I only came up three [sic] times. Come on, bro.”— Luis RiveraRivera distinguished his own two trips from the third trip he said involved other people after the defense confronted him with a prior deposition.Open in transcript →
RedirectLuis Rivera - RedirectLuis RiveraGeorgia Cappleman2highlights106lines spoken

Summary

Rivera addressed credibility challenges, testified about an alleged call concerning money, reaffirmed two Tallahassee trips, and described a restaurant incident involving Garcia.

Highlights (2)

Day 4

Day 5

Day 6

Day 7

Charge ConferenceCharge ConferenceMentioned

Summary

The court finalized jury instructions, retaining lesser-included homicide offenses, revising principal-liability language, removing independent act, and setting deliberation procedures.

Mentioned in this proceeding.

Day 8

CACharlie AdelsonOct 26, 2023 – Nov 6, 2023Called by prosecution

On Day 2 and Day 3, Rivera testified for the State about participating with Sigfredo Garcia in the killing, two Tallahassee trips, cash received after the homicide, and his cooperation agreement. Defense challenged his knowledge, memory, and the State's theory; redirect addressed and denied a gang-based threat theory.

Day 1

Day 2

DirectLuis Rivera - DirectLuis RiveraGeorgia Cappleman6highlights331lines spoken

Summary

Luis Rivera described his cooperation agreement and gave a first-hand account of the alleged planning, shooting, payment, and aftermath of Dan Markel's murder.

Highlights (6)

testimony highlightRivera said Garcia brought him the job, that he and Garcia would travel to Tallahassee, and that Katie was to receive the money; he described the total payment as $100,000 split three ways.Open in transcript →Watch this moment ▶
Show all 6 highlights

Day 3

RedirectLuis Rivera - RedirectLuis RiveraGeorgia Cappleman2highlights26lines spoken

Summary

Rivera denied a Latin Kings connection to the murder and said Garcia did not discuss the dentist during the Tallahassee trips.

Highlights (2)

testimony highlightRivera said Garcia was frustrated, jealous, angry, and drinking heavily when discussing the dentist, while stating that Garcia did not discuss the dentist during the Tallahassee trips.Open in transcript →Watch this moment ▶
Quote“No. No. I don't even know these people, man. The Latin Kings ain't got nothing to do with this.”— Luis RiveraRivera directly rejected a gang-related explanation or threat theory.Open in transcript →Watch this moment ▶

Day 4

Day 5

Day 6

Day 7

Day 8

DADonna AdelsonAug 22, 2025 – Sep 4, 2025Called by prosecution

On Day 1, Rivera gave a cooperating codefendant account of the alleged recruitment, Tallahassee trips, shooting, and later cash payment. Cross-examination addressed what he knew about alleged Adelson involvement and limits in his memory.

Day 1

DirectLuis Rivera - DirectLuis RiveraGeorgia Cappleman5highlights249lines spoken

Summary

Luis Rivera admitted his role under a cooperation agreement and described the alleged planning, shooting of Dan Markel, and cash payment that followed.

Highlights (5)

Show all 5 highlights
CrossLuis Rivera - CrossLuis RiveraJackie L. Fulford2highlights34lines spoken

Summary

Rivera confirmed prior photo-sheet identifications and agreed that, as far as he knew, Donna Adelson and Harvey Adelson were not involved; the court later admitted State's Exhibits 37 and 121.

Highlights (2)

testimony highlightUsing Defendant's Exhibit 50, the defense elicited Rivera's confirmation of his prior photo-sheet markings for Katie Magbanua, Sigfredo Garcia, himself, Dan Markel, and Wendi Adelson; Rivera also agreed that he had said Donna Adelson and Harvey Adelson were not involved, as far as he knew.Open in transcript →Watch this moment ▶

Day 3

Day 4

Day 5

Day 6

Day 7

Day 9