Note: To help refresh your memory, wiki links are provided for characters when available.
Lie To Me - "Veronica"
Human Target - "The Wife's Tale"
M.C. Gainey guest starred as 'Donnelly,' the guy that Chance got the file from. LOST fans will recognize him as 'Tom Friendly,' one of "The Others." If you watched Happy Town, then you may also recognize him as 'Sheriff Griffin Conroy.'