The Death Triangle

1   Death House Rescue
2   Murder By the Dead
3   The Temple Bells
4   Circle of Death
5   The Death Triangle
6   The Voice of Death
7   Sabotage
8   Poison Death
9   The Phantom Voice
10   Hounds in the Hill
11   The Plot Murder
12   The Bride of Death
13   The White Legion
14   A Gift of Murder
15   A Mask for Murder
16   A Pass to Death
17   Aboard the Steamship Amazon
18   Air Freight Fracas
19   Appointment With Death
20   Black Rock