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In the first season, the show was originally a detective series, about midway through the second season, the series became more serious in tone and more of a traditional crime drama.
This show was cancelled after season three. The last episode aired on July 9, 1978. In August of 1979, Robert Wagner returned to television in the pilot movie of Hart to Hart (1979) with Stefanie Powers and Lionel Stander.
Launched the television career of Sharon Gless.
At first, Sharon Gless admitted she was a little intimidated working work Eddie Albert, yet, she truly loved him.
Robert Wagner was married to Natalie Wood, in real-life. Near the show's cancellation, she had a very small scene.