Saturdays at 8 p.m., beginning Sept. 23.
This Australian series set in 1959 opens with Dr. Lucien Blake, a keeper of secrets and a solver of mysteries, returning to the rural gold rush city of Ballarat to take over his late father’s medical practice and the role of police surgeon. Jean Beazley, his new receptionist and housekeeper, sometimes finds him a bit eccentric, but she has a keen ear for useful gossip.
In the first episode, a woman is found floating dead in Lake Wendouree. Over the course of the first season Dr. Blake encounters prospectors, traveling salesmen, quiz show contestants and some of his old army colleagues – and must figure out the puzzles they embody.