The Dark Tunnel

Doctor Robert Branch, a university professor, becomes convinced that his friend's death was not suicide but arranged by a Nazi espionage group on campus. Facing disbelief from others and the danger of being targeted himself, Branch must navigate a perilous situation where trusted individuals may pose a threat. Originally published in 1944 under Ross Macdonald’s real name, this story explores themes of suspicion and espionage in a tense academic setting.