the pastor and his church sacrificed their own needs to send money to the victims of katrina. and when marie carlson needed help, they took her in too. >> it's what pastors do for their congregation. >> reporter: but now? >> i'm left with a missing person who's just vanished off this earth. >> reporter: a week and a half after marie vanished, or drove away, or whatever she did, the detectives went calling on the flanders. who said they fully expected marie would return soon. this wasn't the first time she took spur of the moment trips, they said. >> never to the point where she had to be reported to law enforcement missing, though. she came back. >> reporter: although the flanders told the detectives they were quite worried about marie's state of mind. >> they noticed a downward spiral. >> reporter: that she was going into a depression or something? >> she might be going into a depression state, yes. >> reporter: thing was, said the pastor and his wife, marie could