Edgar Devereaux was investigated by Michael Garibaldi for illegal activities in connection with the murder of a security informant Stephen Petrov.[1]

Garibaldi quickly uncovers evidence that Devereaux may be involved in a plot to assassinate the Earth Alliance president, Luis Santiago. Garibaldi is on his way to inform Sinclair when he is confronted by Devereaux and without warning is shot in the back by his second. Devereaux and his associates are later killed by Jack in what he claimed was self-defence, though Devereaux's PPG was cold when his body was found, indicating that it had not in fact been fired.