Story highlights "Please do the right thing and turn yourself in to the police and bring Beth home," wife entreats husband

The 15-year-old girl disappeared this week, as did a 50-year-old teacher from her school

(CNN) A former Tennessee teacher has been added to the state's "Top 10 Most Wanted" list after being charged with aggravated kidnapping in the disappearance of a 15-year-old girl.

Authorities say Tad Cummins, 50, kidnapped Elizabeth Thomas, a freshman at the high school where Cummins taught until this week. The girl is in imminent danger, they said.

Cummins also has been charged with sexual misconduct with a minor.

The teacher's wife delivered an emotional appeal Friday for her husband to turn himself in.

"Tad, this is not you. This is not who you are," Jill Cummins pleaded during a news conference. "Please do the right thing and turn yourself in to the police and bring Beth home."

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