A fiercely exciting story of cat-and-mouse tactics, played out against the drama of a suicide attempt by a beautiful girl. As far as the river police are concerned, the attempted suicide is a routine matter. Nothing too special, just a girl throwing herself off Hammersmith Bridge in a fit of desperate remorse. But when she is admitted to the West Kensington Hospital, she finds herself coming under the scrutiny of Tim Long, the surgical registrar. Out of kindness of heart, then out of grim necessity Tim and the rest of the hospital staff find themselves caught up in the pitiful life of a girl for whom there seems to be ultimately no escape except death.