Career: Caan began appearing in off-Broadway plays before making his Broadway debut in Blood, Sweat and Stanley Poole in 1961. He appeared in TV series such as The Untouchables, Wide Country, Dr Kildare, and Ben Casey, before landing his first film role in 1964 thriller Lady in a Cage. A year later, he landed his first starring role in Red Line 7000. More films followed in the 1960s, including El Dorado (1966), Countdown (1968), and The Rain People (1969). During the 1970s, he won acclaim in TV movie Brian's Song, and on the big screen in The Godfather (1972), The Godfather Part II (1974), Rollerball (1975), Funny Lady (1975), A Bridge Too Far (1977), and Violent Streets (1981). After a break from acting, he returned in 1987 in Francis Ford Coppola's Gardens of Stone. He went on to star in Alien Nation (1988), Dick Tracy (1990), Misery (1990), Honeymoon in Vegas (1992), Eraser (1996), Mickey Blue Eyes (1999), and Elf (2003). In 2003, he returned to TV in Las Vegas, a role he played for five seasons.

Career: Messner made his screen debut in 1998 in the US soap Guiding Light, and has worked consistently since. His movie credits include The Sweetest Thing, Spartan, and Anacondas: The Hunt for the Blood Orchid, as well as appearances alongside Bruce Willis in Tears of the Sun, The Whole Ten Yards and Hostage. He has guest starred in CSI: Crime Scene Investigation, Friends, Angel and The OC, before landing the leading role in detective drama Killer Instinct.