The long-awaited truth may finally be out about Luke's (Anthony Geary) months-long mysterious behaviors on General Hospital.

Things Heat Up Between Patrick And Sam In Amsterdam

After more evidence continued to emerge that he may have been involved with some major wrong-doings, Tracy (Jane Elliot), Sam (Kelly Monaco) and Patrick (Jason Thompson) all headed to Amsterdam in search of answers. Their investigation however, has yielded some surprising discoveries however-especially as someone who they didn't expect to see walks into the appointed café for a meet-up.

"He is the Jerome's partner!" Tracy exclaims to the others in a preview clip for the Monday, October 13 episode.

Patrick Reveals The Truth About Luke To Sabrina

Since Tracy was so adamant her husband could not be involved with such shady schemes, it is unlikely that Luke himself (or his imposter-whom no one is aware exists while the real Luke is locked away in a mental institution) walked through the door. However, the person who does walk through the door (and could very well be Luke's imposter without his disguise) will be someone familiar and recognizable to the three-meaning they will need to decide on the right course of action against the surprising person.

Back in Port Charles, another unexpected and decidedly unwanted reunion has occurred between sisters Liesl Obrecht (Kathleen Gati) and Madeline/Magda (Donna Mills). Madeline left town after it was revealed she was the one who put her daughter Nina (Michelle Stafford) in a coma, but she is now back.

And even though before she left it was revealed that Nathan (Ryan Paevy) was actually Liesl's son, despite being raised as Madeline's, his true parentage may not be the only one that should be questioned, after Madeline gives her a sister a chilling warning.

"You'd better leave my daughter alone, she says to Obrecht.

General Hospital airs Monday-Friday at 3 p.m. on ABC.

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