Murder mystery takes major twist in Maryland

A man was arraigned on murder charges in the death of his four-month-pregnant girlfriend.
1:16 | 09/14/17

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Transcript for Murder mystery takes major twist in Maryland
Next tonight here, a Maryland man arraigned on murder charges in the death of his girlfriend. A high school teacher four months pregnant. That same man appearing days earlier with her family, holding the mother's hand. ABC's linsey Davis tonight on what the mother knew. Reporter: He tearfully pleaded with the public for the safe return of his girlfriend, Laura Wallen. Laura, if you're listen, doesn't matter what type of trouble, there's nothing we can't fix together. Reporter: Tonight, Tyler Tessier is behind bars, charged with murdering the beloved high school teacher who was reportedly four months pregnant. I don't know where she is. Reporter: Police say he killed the 31-year-old on September 3rd. Later, sending a text from her phone, which allegedly read, "I'm like 95% sure Tyler is not the father." Wednesday, police found her body buried in a shallow grave in a rural area in mobt gomry county, Maryland. Authorities say the victim's family knew he was a person of interest before that press conference. His participation was actually an investigation strategy, as he sat there holding her mother's hand. He is a monster and he is a liar. Reporter: According to the prosecutor, Tessier was involved in a love triangle, was actually engaged to another woman. He's being held without bond.

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