When young women from Serbia are conned into to coming to America and staying at a nonexistent youth hostel in New York City, Eddie goes undercover to find the missing women. Jamie's concerned that Jamie's going into this operation with too little information but since she speaks Serbian and fits the profile, Danny thinks she's perfect for the job.

Elsewhere, an old case comes back when Sarah gets a letter from the man who murdered her family when she was six years old. Frank was the cop on the case and he's kept in close contact with Sarah since she was a child. Now he offers to go to the prison with her to meet the man who murdered her family. He tells her he's sorry. Sarah tells him that if he means that he'll kill himself.

Erin meets Henry's new girlfriend and is immediately suspicious. She asks Alex to investigate and he learns that Sylvia not only has several aliases but also has an open warrant for grand larceny down in Florida. Henry ends up having Sylvia arrested.
Watch Blue Bloods Season 5 Episode 18 Online now right here at TV Fanatic.