Witness for the prosecution, by A. Christie.--Dial "M" for murder, by F. Knott.--Sleuth, by A. Shaffer.--The letter, by W.S. Maugham.--Child's play, by R. Marasco.--Arsenic and old lace, by J. Kesselring.--Angel Street, by P. Hamilton.--Bad seed, by M. Anderson.--Dangerous corner, by J.B. Priestley.--Dracula, by H. Deane and J.L. Balderston.