If it is not that show, let me know and I will ask P. He knows a disturbing amount about television (and movies). Feel free to ask him about all your vague memory movies and he might be able to help.
I have one though, and he can't help with it...
Some kind of treasure, ship/boat goes down, woman rescued and nursed back to health (maybe on a Greek island), she is wearing white, she fights someone on a clifftop or beach.
It may have been a dream, but I am pretty sure it was a film. Some kind of action thing?