When does Q.E.D. return?

Q.E.D. is a 1982 adventure television series set in Edwardian England. It starred Sam Waterston as Professor Quentin Everett Deverill, a scientific detective in the mold of Sherlock Holmes. The series was broadcast during March and April, 1982 on the CBS television network in the United States and by a variety of ITV companies in the UK.