Top Israeli scientist, Arnie Klein, 'defects' to Denmark in order to protect his discovery, the secret of simple, economic space travel by use of the 'Daleth effect'. He wishes to develop the idea without it falling into the hands of the military, since it also has potential as a weapon. But he is forced to reveal his secret to the world when the Daleth effect unit is fitted to a submarine which is sent into space to rescue two stranded Soviet cosmonauts.

Klein and his friends are then subjected to all kinds of international pressure from people wanting the secret.

This is a novel about the misuse of scientific discovery, and was listed by Stanley Schmidt as one of the '10 SF Books For Scientists'

Dedication: Tilegnet Svend Dragsted