Robert Morley movies

In WWI East Africa, a gin-swilling Canadian riverboat captain is persuaded by a strait-laced English missionary to undertake a trip up a treacherous river and use his boat to attack a German gunship.

Puritan statesman Oliver Cromwell leads England in a civil war against the absolutist and Catholic-sympathetic King Charles I.

When a wealthy old man appears to have been "frightened to death" by a cat, Miss Jane Marple suspects one of his four relatives, all heirs to his estate, of his murder.