Tyler Hadley as boy scout.

Tyler Hadley

Tyler Hadley

Tyler Hadley booking photo.
(Photo: Port St. Lucie Police)

Tyler Hadley
(Photo: St. Lucie County Sheriff's office/AP Photo)

Tyler Hadley

Tyler Hadley
(Photo by Eric Hasert/Treasure Coast Newspaper)

Tyler Hadley

Tyler Hadley

Tyler Hadley
(Florida Department of Corrections)

The home of Mary Jo and Blake Hadley is surrounded by crime scene tape on 300 block of Northeast
Granduer Avenue, Port St. Lucie. (Photo: Allen Eyestone/ZUMA Press/Corbis)

The murder's weapon.

The victims

Blake and Mary-Jo Hadley

Blake and Mary-Jo Hadley
(Photo: Florida State Attorney's Office)