r/Casefile

Have listened to all the the classics and big recommendations - but looking for any hidden gems that dont make the big lists!

The story takes place in the US (maybe in the northeast part of the country) and centers on a man and a woman in a long-term relationship - I don’t recall if they were married.

The woman allegedly begins to suffer from health issues and eventually travels to Texas (where her “sister” lives) for treatment. The man corresponds regularly with the sister, and eventually learns that his wife/girlfriend has passed away. 

The “sister” later starts up a relationship with the man and moves in with him. She also gets hired into the job that her late sister occupied. The man and co-workers can’t help but notice the striking similarities between her and her sister. My recollection is that her co-workers are the ones that find something amiss, determine that the woman is not who she says she is, and report the situation to the authorities. 

I don’t recall if there was any physical crime committed, but am thinking there must have been a financial motive at play. 

I’ve looked through all Casefile episodes multiple times but have been unable to find this one. Based on these rough details, does anyone recall this episode? Thank you in advance!