Cold Case episode in which a mom is murder during an eclipse by her lovers son during the 70's?

Question

A couple attends a swinger party in which later the mom is murdered by her one night stand son because she danced with him the prior night and he thinks she likes him; but in reality she doesn't, she only did to make her lover jealous, then the son kills her while an eclipse appears in the day!

what's the title of the episode?

Answer 1

it was a good episode; i like that show, but what's your question?