38-year-old David Voelkert thought he was chatting with a cute 17-year-old girl on Facebook about his plans to track down and kill his ex-wife. Turned out to be his ex-wife.

Indiana resident Angela Voelkert was locked in a child custody with her husband, so she created the 17-year-old alter-ego "Jessica Studebaker" and befriended him on Facebook, hoping to draw out some incriminating information. (Hint middle-aged men: 17-year-old girls who befriend you on Facebook are either your vengeful ex-wife, a scammer, or Chris Hansen.)

And she got it. Throughout David Voelkert's conversations with "Jessica," he allegedly admitted to have secretly planted a GPS on her van so it would be easier for a hitman to kill her. "I am going to find someone to take care of her and now it will be easier because I know where she is at all tims," he allegedly wrote.

In another message, he allegedly asked Jessica to help him out with the hit:

I can do what I want and not have to worry about not seeing my family anymore. You should find someone at your school. There should be some gang-bangers there that would put a cap in her ass for $10,000. I am done with her crap!

Now David Voelkert has been arrested by FBI agents for installing the GPS. (Though not, curiously for planning to kill her.) How many times do stories like this have to happen before people stop befriending attractive strangers and telling them their most intimate secrets? [The Smoking Gun]

Update: Whoa, David Voelkert was actually playing along and knew it was his ex-wife the whole time! In a sworn affidavit given days before he started talking to "Studebaker" about killing his ex-wife, he reveals that

I am lying in extent to gain positive proof that it is indeed my ex-wife trying to again tamper in my life. Anything said in the caht to her from me cannot be held as the truth…

So twisted (but brilliant!). The Feds have dropped the charges, about a week after first arresting Voelkert.