Timothy Bottoms is a subdued maniac with a plan to blackmail $1 million from a group of amusement park owners.Pic’s plot is simple and uncluttered. There is a madman on the loose, one with a thorough knowledge of bombs, rollercoasters and electronics. From a short scene early on, there is a hint that he served in Vietnam, which is supposed to partly account for his instability. His sole objective is cash. Bottoms and the man trying to outsmart him (George Segal) are adversaries who develop a mutual respect and, in a sense, a rapport. Pic’s taut opening 20 minutes depict the major catastrophe – bombing of a rollercoaster track and the subsequent derailing of the cars. The rollercoaster rides are the picture’s highlights and they are fabulous.