Robert Gavilan is a former CIA agent. who is now working for Oceanographic Institute headed by Marion Jaworski. Now was in awhile someone from his past as a spy comes to him asking for his help. Or one of the jobs that he is on, somehow turns into trouble. Or someone just needs his help as both as former spy or/and as an Oceanographer. Milo Bentley is an old friend of his father's who is staying in Robert's guest room and uses his history with his father to freeload and mooch off him.
Did You Know?
was originally cast in the series, but illness forced him to withdraw after filming a handful of episodes. The part was recast with Patrick Macnee
, and the scenes were re-shot. See more