Casal Osterman was released in the year 1983。Casal Osterman is also called as The Osterman Weekend, Verinen viikonloppu, Sam Peckinpahs Blodiga weekend, Operasjon Omega, Mission CIA, Clave: omega, Osterman-Weekend。

The host of an investigative news show is convinced by the CIA that the friends he has invited to a weekend in the country are engaged in a conspiracy that threatens national security in this adaptation of the Robert Ludlum novel.

Casal Osterman actors and actresses include Burt Lancaster, Craig T. Nelson, Dennis Hopper, Hansford Rowe, Helen Shaver, John Hurt, Rutger Hauer, Tim Thomerson。