Sir Wilfred Robards, a prominent barrister, has just spent two months in hospital with a heart attack. Returning to his law practice upon discharge, he took on the case of Leonard Worley, an unemployed man accused of murdering his elderly friend, Mrs. Emily French. Wally claimed his innocence, although all the evidence pointed to him as the murderer, but his absent witness, his ruthless German wife Christine, did not appear as a witness for the defense, but became a witness for the prosecution , and blatantly proved her husband guilty of murder. Sir Wilfred thought the case suspicious, especially to Mrs Wally