million to travel 50 miles or more during this memorial day weekend. 20 people were rescued from a rollercoaster at a six flags in texas. the car park spokesman said the rioters were stuck in an upright position. the coastal remain closed. now back to dateline. welcome back to dateline. i m craig melvin. brett parker was heading to trial, charged with a double murder of his wife tammy and their friend bryan capnerhurst. brett admitted shooting bryan in self-defense, though he claimed it was only after bryan killed tammy. but prosecutors were prepared to show brett had plenty of motive to want his wife dead, including a revelation that would stun even tammy s best friends. back now to andrea canning with mystery at ascot estates. in august of 2012, columbia,