The Harry Lime of this excellent series was a far cry from the one in the classic 1949 film noir featuring Orson Welles as Lime. In that, Lime stole penicillin and sold it on the black market. You can't get much more evil than that. In the radio series, with Welles recreating the role, he was a sort of people's thief, a modern day (for that time) Jesse James who stole only from people far greedier than he. In the TV series, all that was wiped away and he was given a clean slate as a legitimate businessman in the import-export business. His business ventures often (more often than not) lead him into adventure and international intrigue.
I have a few episodes on DVD and am considering contributing to the show guide, including episode summaries, but some episodes take so many twists and turns it would take some thought to adequately summarize them.