Guilty? (also known as By Whose Hand and Je Plaide Non Coupable) is a 1956 British film directed by Edmond T. Gréville and starring Leslie Perrins, Hugh Morton and Andre Mikhelson. It was written by Maurice J. Wilson based on the 1951 novel "Death Has Deep Roots" by Michael Gilbert. Plot. Former French Resistance heroine Vicki Martin is on trial at the Old Bailey for murdering her ex-lover. Solicitor and amateur detective Nap Rumbold is convinced that she is innocent, and investigates. He unmasks a gang of counterfeiters, and saves Vicki's life. Reception. "The Monthly Film Bulletin" wrote: "The hero's hair-breadth escapes and surprising adventures rival any serial in exuberance; it is something of a relief when the action reverts to the more sober atmosphere of the Old Bailey (though even here there are some lively incidents). Admirers of Michael Gilbert's book are not likely to be disappointed, for on its own level the film is brisk and efficient. Nevertheless, some might find it odd to reflect that it is the work of the man who directed "Remous"." "Kine Weekly" wrote: "Use of flashbacks impel it frequently to cross the Channel and the constant change of locale makes it slightly difficult to follow, but its keen sense of humour and thrills get it over. ... The picture certainly gets around, but a number of neat comedy touches subtly case the concentration demanded of its audience. John Justin turns in a gay swashbuckling performance as Nap, Barbara Laage is quite a girl as Jacqueline, and Andree Debar Shee convinces as the tormented Vicki." Leslie Halliwell wrote "Solidly cast old-fashioned mystery with a courtroom climax." In "British Sound Films: The Studio Years 1928–1959" David Quinlan rated the film as "average", writing: "Plot is not too hot, but thriller is at least lively, well-acted."