Sean Ellis case (1993–2015)
Boston Police Detective John Mulligan was shot and killed outside a Roslindale Walgreens in 1993. Sean Ellis, 19, was convicted of the murder and sent to prison for life. A re-investigation found that detectives in Mulligan's own narcotics unit, including John Brazil, had a scheme to steal cash from crime scenes, and that evidence against Ellis was compromised.
Ellis's conviction was vacated in 2015 after more than 20 years behind bars.
The case became a symbol of Boston police corruption and helped expose a pattern of misconduct in the department.
The same corruption — detectives stealing from crime scenes — is central to Lucien's case, and Brazil admitted to lying as part of that scheme.
