Law enforcement · FBI

Patrick Sanford

FBI special agent and lead investigator on the Dan Markel murder case, who testified as a prosecution witness in all four trials.

Appeared Garcia–Magbanua Magbanua Retrial Charlie Adelson Donna Adelson

4,856 lines · 33 appearances · 31 mentions · 4 trials

About

Sanford is the lead investigative witness connecting the prosecution's major evidence streams across all four trials. He returned to present overlapping investigative evidence, with the scope changing and expanding by defendant rather than remaining identical. Reading his four appearances together shows both what investigators presented at each point and which claimed evidentiary gaps the defense pressed.

Across Trials

Sanford's formal role never changed — he was a prosecution witness and the case agent in every trial — but what he was asked to prove shifted markedly as the case moved up the alleged chain. In the Garcia–Magbanua 2019 trial his testimony was oriented toward the mechanics of the killing and the identification of the accused shooters, drawing heavily on Luis Rivera's proffers, and his attempt to authenticate his own transcript of the Dolce Vita recording was rejected by the court after a three-part voir dire on his lack of specialized training. By the Magbanua 2022 retrial the same recording and the surrounding calls had been forensically enhanced and were narrated call by call, with the emphasis moving to what Magbanua knew; there the defense impeached him with a 2019 deposition answer about recording policy that he conceded had been mistaken. In the Charlie Adelson 2023 trial his account expanded outward into motive documents, the family's monitoring of Wendi Adelson, and the pattern of payments, and he was recalled a second time to carry the undercover-bump sequence. In the Donna Adelson 2025 trial his testimony reached its widest scope, adding Magbanua's post-conviction disclosures, the seized day planners, and the events after Charlie Adelson's conviction. The cross-examinations show a parallel evolution: early challenges centered on investigative gaps and unpursued leads, while later ones focused on the absence of direct evidence tying the remaining defendant to the crime and on the credibility of the cooperating witnesses the case had come to rest on. Across the four trials he acknowledged specific errors or limits while continuing to defend the investigation's overall interpretation.

Trial Record (64)

GM Garcia–Magbanua Sep 26, 2019 – Oct 11, 2019

Trial Summary

Testified as the FBI case agent on trial days seven and eight, presenting the Rivera proffer sessions, the FBI "bump" undercover operation, and the April 2016 wiretap call sequence, then facing extended cross-examination on investigative gaps and a defeated attempt to authenticate the Dolce Vita transcript.

Testimony (14)

Direct

Patrick Sanford - Direct

Day 7 Direct

Patrick Sanford - Direct (Part 2)

Day 7 Voir Dire

Patrick Sanford - Voir Dire (Georgia Cappleman)

Day 7 Voir Dire

Patrick Sanford - Voir Dire (Saam Zangeneh)

Day 7 Voir Dire

Patrick Sanford - Voir Dire (Christopher DeCoste)

Day 7 Direct

Patrick Sanford - Direct (Part 3)

Day 7 Procedural

Garcia FBI Interview Proffer

Day 7 Direct

Patrick Sanford - Direct (Part 4)

Day 7 Cross

Patrick Sanford - Cross

Day 7 Cross

Patrick Sanford - Cross (Part 2)

Day 7 Cross

Patrick Sanford - Cross

Day 8 Redirect

Patrick Sanford - Redirect

Day 8 Recross

Patrick Sanford - Recross

Day 8 Jury Questions

Patrick Sanford - Juror Questions

Day 8

Mentioned (10)

Cross

Michael Dillmore - Cross

Day 1 Cross

Craig Isom - Cross

Day 2 Procedural

Voice-Identification Exhibit Ruling Named as the witness through whom the State planned to present 45 recordings to the jury

Day 4 Cross

June Umchinda - Cross

Day 5 Cross

Christopher Corbitt - Cross

Day 5 Procedural

Rivera Phone-Number Relevance Ruling

Day 6 Cross

Oscar Jimenez Jr. - Cross

Day 6 Procedural

Gang-Expert, Wiretap, and Dolce Vita Rulings Prepared the Dolce Vita transcript but was not present at the recording; judge deferred on transcript admission pending predicate from the State

Day 6 Procedural

Wiretap and Dolce Vita Transcript Rulings

Day 7 Procedural

Dolce Vita Recording and Transcript Ruling FBI agent whose qualifications to authenticate the Dolce Vita transcript were at issue; court found he did not qualify as an expert under Martinez footnote 5

Day 7

KM Magbanua Retrial May 18, 2022 – May 27, 2022

Trial Summary

Testified across Days 5 and 6 as the FBI co-lead case agent, walking the jury through the wiretap and undercover investigation on direct and then facing an extended defense cross on investigative scope, interview documentation, and unpursued leads.

Testimony (7)

Direct

Patrick Sanford - Direct (Part 1)

Day 5 Direct

Patrick Sanford - Direct (Part 2)

Day 6 Direct

Patrick Sanford - Direct (Part 3)

Day 6 Direct

Patrick Sanford - Direct (Part 4)

Day 6 Cross

Patrick Sanford - Cross

Day 6 Cross

Patrick Sanford - Cross (Continued)

Day 6 Redirect

Patrick Sanford - Redirect

Day 6

Mentioned (11)

Luis Rivera - Cross (Part 1)

Day 2 Cross

Christopher Corbitt - Cross

Day 4 Cross

Yindra Velazquez Mascaro - Cross

Day 4 Cross

June Umchinda - Cross

Day 4 Procedural

End of Day — Jail Call Admissibility Rulings and Scheduling FBI special agent scheduled to testify Day 5 or Wednesday; judge anticipates lengthy cross-examination

Day 4 Cross

Oscar Jimenez Jr. - Cross

Day 5 Direct

Sherry Bennett - Direct FBI Special Agent who was co-conducting Rivera's cooperation interview with Isom on September 30, 2016, while Bennett was on the phone with Rodriguez

Day 7 Direct

Jason Newlin - Direct

Day 7 Closing

Closing Argument - Tara Kawass

Day 8

CA Charlie Adelson Oct 26, 2023 – Nov 6, 2023

Trial Summary

Testified for the State as the FBI special agent case agent, first on the opening day of testimony and again on recall across two later days to introduce the wiretap intercepts, the undercover approach, and the recorded calls that followed it.

Testimony (7)

Direct

Patrick Sanford - Direct

Day 1 Cross

Patrick Sanford - Cross

Day 1 Redirect

Patrick Sanford - Redirect

Day 1 Direct

Patrick Sanford - Direct (Recall)

Day 4 Direct

Patrick Sanford - Direct (Recall, Continued)

Day 5 Cross

Patrick Sanford - Cross (Recall)

Day 5 Redirect

Patrick Sanford - Redirect (Recall)

Day 5

Mentioned (5)

Cross

Katherine Magbanua - Cross

Day 3 Procedural

Day 5 Morning — Court Opens, Agent Sanford Called In

Day 5 Closing

Closing Argument - Georgia Cappleman

Day 8 Closing

Closing Argument - Dan Rashbaum

Day 8 Rebuttal

Rebuttal Closing - Georgia Cappleman

Day 8

DA Donna Adelson Aug 22, 2025 – Sep 4, 2025

Trial Summary

Testifying across four trial days as the FBI's lead investigator on the Markel case, Sanford carried the State's investigative narrative — Rivera's proffer corroboration, the 2016 wiretap and undercover operation, Magbanua's later proffers, and the November 2023 airport arrest — and on cross agreed he found no direct connection between Donna Adelson and the two men who traveled to Tallahassee.