A young woman is found dead in a park, and it soon transpires that she died as a result of an illegal abortion. Greatly affected, Eve disguises herself as a pregnant woman, and tries to discover who the back-street abortionist is.

The Chief's god-daughter witnesses a murder whilst performing in a street-side harlequin show. On the run from the murderer, she and her boyfriend remain one jump ahead of Ironside's team; but there is an added dimension to the case which the Chief cannot at first hope to guess at, and a further reason for his god-daughter's desperate flight.