Fears of foul play in search for missing Minnesota mom.

The family of Madeline Kingsbury, a missing mother-of-two from Minnesota, fears foul play in her disappearance. She was last seen on March 31 after dropping off her children at daycare with their father. Her husband said he left for work in her van at around 10am and returned later in the day to find her gone. Police have described her disappearance as "involuntary" and "suspicious." More than 2,600 volunteers have helped search for her, and investigators are focusing on the last known travels of her minivan.