On the afternoon of Dec. 14, 2023, Anthony Holland was watching TV when law enforcement showed up to his home near Salt Lake City, Utah.

"I honestly thought I was going to jail for something," Holland recalled during an interview with "48 Hours." But he says he had no idea what crime he committed.

"Have you ever heard of the name Kristil Krug?" one of the investigators asked him. Holland said he once dated a woman named Kristil Krug. In fact, she was his first love. They broke up in the fall of 2000 and had not spoken in years.

Unbeknownst to Holland, 43-year-old Kristil Krug -- a mother of three young children -- had been murdered in the garage of her Broomfield, Colorado, home at around 8 a.m. that day.

Kristil Krug's death and the investigation into who killed her is the subject of

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