and his friends are only tax evaders. Fassett kills the Tremaynes and Cardones by remotely detonating an explosive device on the RV. He sends his soldiers into the house to kill Osterman and Tanner. Fassett taunts Tanner during the attack on the house, revealing that Danforth authorized his wife's murder. Fassett offers to release Tanner's family if Tanner will expose Danforth on television. Sometime later, Danforth prepares for his remote interview with Tanner. Danforth is at his office and will speak into a camera and microphone crewed by the TV station. Tanner introduces Fassett on the air and Fassett, who is also being filmed remotely, exposes Danforth as a murderer. Danforth becomes enraged when he realizes that he has been tricked, publicly unleashing a paranoid diatribe and threatening Fassett with assassination. Fassett's remote location is a secret, but it is clear someone is coming for him. It is revealed that Tanner himself has pre-recorded his questions for both men with Osterman's assistance, and has used the video feed to locate Fassett, whom he shoots and kills. The angle from which Fassett's death is captured protects Tanner's anonymity, thereby appearing to confirm Danforth's threats in real time. Tanner then rescues his wife, his son, and his dog. Cast In addition, Merete Van Kamp makes a brief appearance as Fassett's wife, whose murder sets the plot in motion. Production William Castle initially purchased the film rights and asked author Ludlum to write the script. Ludlum was reluctant. Despite his extensive film and theatre experience, he said "I didn't leave that crowd of ocelots to go back into it." As related in the documentary Alpha to Omega: Exposing The Osterman Weekend, producers Peter S. Davis and William N. Panzer were celebrating the wrapping of a film when they ran into Larry Jones. Jones, also a producer, revealed that he owned the film rights to Robert Ludlum's 1972 novel The Osterman Weekend, but was giving up on turning it into a feature film since he had not been able to develop a satisfactory screenplay. Davis and Panzer immediately offered to purchase the rights, as they felt this could be the project that elevated them out of the B-movie features that they had been financing up to that point. Jones and a partner agreed, and Davis and Panzer began pre-production. The first order of business was to adapt Ludlum's complex story, and for this they