Angus DePool was a wealthy financier. He met Dick Tracy in a health spa where Tracy was recovering from a serious cold he had contracted during the Krome storyline. Angus DePool was bald and had a light moustache.
Shortly after meeting Tracy, Angus was murdered by his nephew, Selbert. Selbert sneaked into the health spa in the uniform of an orderly he had knocked out. While Angus was locked in a steam cabinet and making a phone call to Tracy about Selbert's escape (Selbert ,disguised as the orderly, was holding the phone for him), Selbert assaulted Angus' exposed head. Selbert then pushed the cabinet off of its moorings and it fell to the floor where Angus' head was knocked against a pipe. Angus died from the injury. Tracy heard the uproar over the phone line and rushed to the scene.
During his investigation of Angus' death, Tracy met Angus' wife, Mrs. DePool. She concealed Selbert in her home, and described her husband as a cruel, greedy man. It was later revealed that Selbert had escaped from a mental institution where Angus had had him committed. Selbert claimed that this was Angus' attempt to remove Selbert as an obstacle to obtaining Angus' brother's (Selbert's father's) fortune. However, Selbert's paranoia, obsession and violent tendencies give some validity to the claim of mental instability.