The team attempts to catch a killer who preys on families while they are supposed to be on vacation.
Married Maryland couple Chris and Allison Crawford and their two children, Sam and Emily, are found dead in their home in what looks to be a murder-suicide. The BAU know that it isn't as another area family, the Millers - also a mother, father, son and daughter - were found dead in their home one month earlier in what was originally deemed a murder-suicide. The other connections between the two sets of deaths are that the families were found five days after the start of what was supposed to be a family vacation. Both sets of vacations were never taken, yet the bodies were found less than a day postmortem. The first suspect is Eric Miller, the deceased Reese Miller's ex-husband and the biological father of the two deceased Miller children. The BAU try to find a connection between the two families and a possible connection between Eric Miller and the Crawfords. Also, they may have some substantial leads when they discover a secondary cell phone account under Allison Crawford's name, and