NICHOLS HILLS, OK -- We're learning much more about Dr. Stephen Wolf's past. His practice was closed Monday, but business will resume Tuesday without one of the doctors. "It's very quiet. You hear the church bells on the hour," Wolf's neighbor Bruce Ball said.

It's a sleepy street awakened by emergency lights about 4 a.m. Monday.

"When something like this happens in your neighborhood, it's just shocking," Ball said.

Ball lives just a few of houses away from Wolf and was also one of his patients in the early 1990s.

"He was just strictly business; there wasn't a whole lot of chit-chat," Ball said. "Some people will open up and kind of talk to you, but he seemed very business-like."

For good reason; Wolf was being monitored by the Oklahoma State Board of Medical Licensure and Supervision.

The board wouldn't let Wolf practice in Oklahoma until he started seeing a psychiatrist.

In the mid-eighties Wolf saw a psychotherapist who wrote a letter on his behalf as Wolf worked to get a medical license in Oklahoma.

In it he wrote, "Stephen has completed his psychotherapy. I certainly see no reason to be concerned about him at all from a psychological point of view and do not feel that he needs any continued therapy."

Wolf applied for a license in 1991; since then he's had two medical malpractice suits filed against him.

One was dismissed and the other settled just last week.

He had some trouble professionally but personally, his friends say it's a different story.

"Steve Wolf is the finest man I've ever known in my life. I love him like a brother. I love him like Jonathan and David in the bible," said friend Bill Cathey. "This is a tragedy beyond belief."

Wolf is behind bars without bond.