On the morning of Nov. 14, 2022, the University of Idaho students woke up, went upstairs and discovered their roommates had been killed during the night. Kaylee Goncalves, Madison Mogen, Xana Kernodle and her boyfriend Ethan Chapin, who was staying the night, had been stabbed to death the night before.

Best-selling author, James Patterson, is out with a brand new book about Pennsylvania native Bryan Kohberger and the Idaho college murders.

Author James Patterson discusses how Bryan Kohberger's tunnel vision caused him to leave behind crucial evidence despite his criminal justice background.

The family members of the victims, too, want to know why he did it. Kernodle’s father said he opposed the plea deal because it prevented all the evidence from coming out — and allowed Kohberger to keep his secrets about why he butchered the coeds with a Ka-Bar knife.

The 30-year-old faced the death penalty for the gruesome murders of four students, Kaylee Goncalves, Ethan Chapin, Xana Kernodle and Madison Mogen in their home in Moscow, Idaho, in November 2022. The plea deal spares him his life - but the abrupt ending leaves relatives of the victims with conflicted feelings and many questions unanswered.

Author James Patterson joins 'Fox & Friends' to share details from his new book, 'The Idaho Four,' on the murders of four University of Idaho students.