I love Voyage to the Bottom of the Sea. I loved it when it was first broadcast, and I love it now. However, this episode is not one of the reasons why I love it.
Later in the series, when they figured out that the fan base consisted of young teen boys, they wisely dropped most women from the plots. The Seaview became a ship crewed by men who had no mothers, no wives, no girlfriends, no sisters--and it all worked, because week after week, they chased after monstrous guppies, celery monsters, or rock men. This was wonderful. I never tire of these episodes. I understand that Hedison and Basehart sent each other turkeys for especially standout performances in them.
But "Time Bomb" is one of the unfortunate "spy" plots. They tend towards the tedious.
The most amazing thing about this episode is that both Crane and Nelson show interest in different women--and both are unconvincing. Really unconvincing. Crane looks like he's re-enacting a fluffy Hollywood movie during his flirtation; one has the feeling he never tried this before. But Nelson is the real shocker! He not only looks uncomfortable with his spy, he looks embarrassed by the whole thing! (At least he does not lapse into his trademark grumpiness when faced with the unfamiliar.) "You mean I have to touch a GIRL!!??" The Nelson scene much be seen to be believed.
Please, bring on the leprechauns.