Detective Comics #366

Detective Comics #366 (On Sale: June 29, 1967) has a cover by Carmine Infantino and Murphy Anderson. One interesting aspect of Detective at this time was the way Fox and Broome traded off series each month.

"The Round-Robin Death Threats" is by Gardner Fox, Carmine Infantino and Sid Greene. Bruce Wayne receives a letter ordering him to perform a simple task at a specified time. To ensure the order is carried out, the letter is sealed with a special gas that not only forces Bruce to obey, but also to keep him from talking about it. Despite his best efforts to stop the compulsion Batman complies with the order to tell Commissioner Gordon to turn on his radio at a specified time.

However, Robin has noticed Batman's behavior and reconstructed the letter. He arrives in time to stop Gordon from turning on the radio that was rigged to kill him. Gordon then enters a trance, just like the one affecting Bruce. Batman and Robin follow and prevent Gordon from triggering the death of John Kobler.

Kobler then goes into a trance too, nearly triggering the death of sportswriter Fred Tinney. Then Tinney goes into a trance as well. Batman and Robin have stopped each death, but Tinney gets away. Batman returns to the Batcave knowing that Bruce Wayne is the target, but he is unable to tell Robin due to the compulsion. Instead he writes a will for Robin that contains a clue to the connection between himself and the other potential murder victims. Reprinted in Batman #262

The Elongated Man back-up "Robber Round-Up in Kiddy City" is by John Broome, Carmine Infantino and Sid Greene. Sue Dibny witnesses a suspicious man at a car rental agency. She forces her husband to investigate though Ralph suspects the man is an ordinary salesman. Sue forces Ralph to follow the man to a museum, where a robbery is in progress. The crooks escape in the salesman's car, leading Sue to conclude that her suspicions were correct.

Edited by Julius Schwartz.