The Andromeda Strain to the upper atmosphere, where the oxygen content is lower, better suiting its growth. The novel's epilogue reveals that a manned spacecraft, "Andros V", was incinerated during atmospheric re-entry, presumably because Andromeda had eaten its tungsten/plastic laminate heat shield and caused it to burn up. Crichton was inspired to write the novel after reading "The IPCRESS File" by Len Deighton while studying in England. Crichton says he was "terrifically impressed" by the book - "a lot of "Andromeda" is traceable to "Ipcress" in terms of trying to create an imaginary world using recogniseable techniques and real people." He wrote the
The Ipcress File (film) Subsequently, another CIA operative threatens to kill Palmer if he discovers that the death was not a mistake. Some days later, it becomes clear that while Radcliffe is physically unharmed, his mind has been affected and he can no longer function as a scientist. Carswell has discovered a book titled "Induction of Psychoneuroses by Conditioned Reflex under Stress" - IPCRESS - which he believes explains what has happened to Radcliffe and the other scientists. Carswell borrows Palmer's car to test his theory on Radcliffe, but is shot before reaching him. Believing that he himself must have been the intended target,