Calculated Risk (novel)

Calculated Risk is a 1960 science fiction novel – specifically, a time travel story – by Charles Eric Maine. It was first published in the U. K. by Hodder & Stoughton; a paperback version by Corgi Books appeared in 1962.

The novel explores themes of personal moral responsibility, and in particular the responsibility of scientists to prevent abuse of the results of their research. It uses the device of "psychological time travel" whereby a person's mind could be sent across time and take over the brain and body of another person living in that time – similar to the device in Maine's earlier and better-known "Timeliner".