As a lifeguard struggles to cope with his wife’s suicide, his emotions are at breaking point when the rapist responsible for her sorrow pleads for help.

In the story it's a chance encounter, not on his watch.
Thanks for all the feed back.

Agreed - the revised logline reads much better! I can't think of any way to improve that one, but how about this because the beginning sounds like he's coping with her suicide while feeling conflicted about saving her rapist (at the same time). "A lifeguard struggles to cope with his wife's suicide and his ethics are ultimately tested when her rapist is drowning on his watch."

Maybe ... maybe not?

Wow, I think that's much more powerful! Terrific.