Josh West (Daniel Collopy) finds out and begins blackmailing Amanda into helping him with his campaign for Mayor, which he eventually wins.
He admits to the team that Keller is blackmailing him into recovering the Laudanol and Casey left behind a fiancee named Kathleen McHugh (Alexandra Bromstad in flashbacks/Clare Carey present day) when he faked his death.
:*Season 5 - involves a rogue DIA psychiatrist Anson Fullerton (Jere Burns), who turns out to be a murderer and a spy bent on blackmailing Michael Westen into doing his dirty work.
The Night Letter by Paul Spike: In 1940, Nazi agents nearly succeed in blackmailing U.S. President Franklin D. Roosevelt into not running for a third term.
Casey with help from a guard he's blackmailing changes into an NYPD patrol officer's uniform and escapes in full view of the Pennsylvania State Police.
Susan helps Priya to get her job back by blackmailing Brian O'Loughlin (Paul Denny) into withdrawing his false accusations of harassment against her.