Christopher Corbitt
Tallahassee Police Department sergeant and cell-site analyst who testified as the State's phone-records expert in all four Markel-murder trials.
About
Corbitt is the connective thread through the case's electronic evidence: the same analyst, the same underlying carrier records, and the same core findings presented to four separate juries over six years. Reading his testimony across the trials shows how one body of phone data was framed against four different defendants, and how the recurring cross-examination themes — what a tower hit can prove, which records were never obtained, and which communication channels are invisible to carriers — were tested and refined each time.
Trial Record (64)
GM Garcia–Magbanua Sep 26, 2019 – Oct 11, 2019
Trial Summary
Testified across six trial days as the Tallahassee Police Department technical-operations sergeant who assembled the call-detail, cell-site, iCloud, GPS, and wiretap evidence, presenting the State's phone-record timeline for the June scouting trip and the July 18, 2014 murder while repeatedly conceding that cell records identify handsets and service areas rather than people and precise locations.
Testimony (24)
Mentioned (5)
KM Magbanua Retrial May 18, 2022 – May 27, 2022
Trial Summary
Testified for the State as a Tallahassee Police Department sergeant supervising the technical operations unit, presenting the cell-site, call-detail, tower-dump, and wiretap-foundation analysis over Day 3 direct and a full Day 4 of cross and redirect.
Testimony (7)
Mentioned (9)
CA Charlie Adelson Oct 26, 2023 – Nov 6, 2023
Trial Summary
Testified as the State's cell-site and call-detail expert, presenting a June–July 2014 communications and handset timeline on Day 3 and facing extended cross, redirect, and a one-question recross on Day 4.
Testimony (5)
DA Donna Adelson Aug 22, 2025 – Sep 4, 2025
Trial Summary
Testified for the State as a Tallahassee Police sergeant and historical communication-records analyst, presenting call-detail, tower-dump, route, and digital-forensics analysis across two days of examination and a later recall.