This episode of "Cannon" begins with Frank returning home to find his possessions gone--all of them. It seems that a hood that Cannon has investigating has taken a dislike to the detective and ordered the robbery. Plus, the robbery would hide the real purpose--to get to Cannon's personal files. Cannon, not surprisingly, is furious and immediately knows who was behind this, Paul Stubber (George Maharis)--but proving it is another thing.
The trail for Cannon heads to Stubber's ex-wife, Renee (Stephanie Powers). She, too, has run afoul of Paul's wrath and she's in the middle of a huge custody battle for their son. Frank takes to the boy and it was nice to see this gentler side to the detective. However, this is dangerous as Paul hates them both--and there's really no limit to his wrath.
As I mentioned above, you see a gentler and kind side of Frank Cannon in this one--something you did occasionally see on the show. This humanized his character a lot and made the show very likable. Overall, well worth seeing--and one of the better shows in the series.