Mr. Keen – P1 The Abandoned Well Murder Case The Bride And Groom Murder Case The Broken Window Murder Case The Case Of Mr Trevors Secret The Case Of Murder And The Bloodstained Necklace The Case Of Murder And The Jewel Thief The Case Of Murder And The Missing Car The Case Of Murder And The Revengeful Ghost The Case Of Murder And The Star Of Death The Case Of Murder And The Strange Woman The Case Of Murder At A Mile A Minute The Case Of Murder In The Air The Case Of Murder With A Thousand Witnesses The Case Of The Absent Minded Professor The Case Of The Boy Who Used Big Words The Case Of The Frightene Child The Case Of The Girl Who Flirted The Case Of The Girl Who Sang Too Well The Case Of The Glamorous Widow The Case Of The Leapin Dog The Case Of The Man Who Invented Death The Case Of The Melody Of Murder The Case Of The Missing Witness The Case Of The Moonless Night The Case Of The Murdered Detective [ 1 ] [ 2 ] [ 3 ]