In the consult, we discuss cases that are sexually violent in nature. Listener discretion is advised.

Welcome to the consult. I'm Julia Cowley, retired FBI agent and profiler, and I'm joined by my colleagues,

Angela Serser, Susan Costler Drew, and Bob Drew, who are also retired FBI profilers. This is part two of three of our consultation

with retired Minneapolis Police Sergeant Holly Kiegel and her sister Heidi Hilton, a retired

business owner. In their retirements, Holly and Heidi volunteered to work on missing person

coal cases, and one of those cases is the

1969 disappearance of William Campbell Underhill, who was called Bill by his friends and family.

It was such a different time back then, and one of our listeners pointed out that in working

these cases, you not only have to be an investigator,

you also have to be an historian. And before we get back to the consultation, I want to give a

quick recap of the case and what Holly and Heidi told us in part one. Bill, who was born

July 2nd, 1948, was a student at the University of Minnesota.

He went missing approximately March 10th, 1969 after leaving a party attended by friends.

Most of those were his friends from high school. The party was at an apartment building in an area called Dinky Town. The location was believed to be near 14th Avenue and 5th Street southeast in Minneapolis.

Bill grew up in St. Anthony Park on the 1,200 block of Raymond Avenue and resided with his parents James Underhill and Ann Underhill,

along with his sisters, Sarah and Mary. Bill's father was a professor at the University of Minnesota

and his mother was a homemaker. Bill graduated from Murray High School in 1966. He lived at home

at the time of his disappearance. Bill's parents contacted the St. Paul

Police Department on March 15, 1969, when Bill went missing. But there was no police report

from that contact and no investigation or search was ever conducted. So this case really wasn't

investigated at all until Holly and Heidi became involved a few years ago.

So how to apply behavioral analysis to this case, one of the main things we need to do is develop

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