Cariou scored his first Tony nomination with a 1970 musical adaptation of the classic film All About Eve, picking up a second nod three years later with composer Stephen Sondheim's "A Little Night Music" (and reprising the role for a movie version co-starring Elizabeth Taylor). Cariou eventually won the statuette (in 1979) for his portrayal of the murderous title character in Sondheim's "Sweeney Todd."
Off the boards, Cariou has appeared in films and television, most notably as former President Franklin D. Roosevelt in the HBO movie Into the Storm, for which Cariou garnered his first Emmy nod.
When his 6-year-old daughter is abducted and the investigation stalls, carpenter Keller Dover tracks down the culprit himself. But his vigilante action pits him against the case's lead detective and puts his own sanity at risk.