A baffling disappearance. A bedroom door locked from the inside. A housekeeper with something to hide. Will retired policeman turned private detective, Joseph Muller, be able to sort out the clues and solve this locked room mystery? Summary by J. M. Smallheer
Chapters
1 Leopold Erlach Disappears 20 min 2 A Mother's Fear 12 min 3 Joseph Muller Takes Up the Erlach Case 29 min 4 Muller's New Housekeeper 12 min 5 The Return of the Prodigal, Part 1 19 min 6 The Return of the Prodigal, Part 2 17 min 7 What Stillinger Saw on the Black Moor 20 min 8 Mr. Robert Hartmann Comes to Inzersdorf 25 min 9 Midnight in the Green House, Part 1 17 min 10 Midnight in the Green House, Part 2 18 min 11 Muller Visits Eva Geiringer 19 min 12 Columbus and the Egg 11 min 13 Muller Visits Rose Cottage, Part 1 17 min 14 Muller Visits Rose Cottage, Part 2 28 min 15 The Embarrassment of Bauer 28 min 16 Mr. Hartmann is Called Away 18 min 17 Muller and Karl Go on a Journey, Part 1 22 min 18 Muller and Karl Go on a Journey, Part 2 19 min 19 On the Eve of Action 26 min 20 ''I am the Man with the Black Cord'' 33 min 21 Where the Blow Falls 33 min 22 Epilogue 7 min
