Police interviewed the family's eldest son, Charlie, who confirmed that the camping trip Joshua described took place; however, unlike his father, he stated that Susan had gone with them and she did not return. Weeks after her disappearance, a teacher reported that Charlie had claimed that his mother was dead. Furthermore, Susan's parents claimed that, while at daycare several months after the disappearance, Braden drew a picture of a van with three people in it, and told carers that "Mommy was in the trunk". /blockquote>

Wikipedia

Disappearance of Susan Powell

Susan Cox Powell (October 16, 1981 - c. December 6, 2009) was an American missing person from West Valley City, Utah. Her disappearance and presumed murder, as well as the subsequent investigation and events garnered significant media attention.

https://en.wikipedia.org/wiki/Disappearance_of_Susan_Powell