Missing Woman's Van Found Partially Submerged

Surveillance video is at the center of a bizarre missing mom case.

A woman and her 8-year-old son vanished on route to a family get-together.

The van they were driving was found partially submerged at a remote beach, far off the route they should have been taking.

There was no trace of mother or son.

"I'm praying they both come home. I'm praying they both show up and I get that phone call that says we found them, we're taking care of them, how fast can you be there to be with them. And that answer is right now," says the fiancé of the missing mother.

The mystery began to unfold four days ago outside Olympia, Washington.

At 7:48 p.m. security cameras caught Shantina Smiley and her son Azriel, with his distinctive Mohawk haircut, at a convenience store.

As the boy wanders off to browse among the shelves, the clerk pulls out a map and gives the mom directions.

At 7:52 p.m. Smiley and her son leave the store, climb into their van, and drive away.

At 9:08 p.m. Smiley was seen at a diner. Witnesses say she fell over in the parking lot as she was leaving.

At 10 p.m. she knocked on the door of a stranger's house to ask for directions. She then drove off and she and her son have not been seen since.

"I can take it apart and I can't find any solution to what's happened here," said Shantina's fiancé.

Her fiancé says the missing mother is a recovering alcoholic who recently had a relapse.