Tom Cruise underwrites so much of Scientology, people connected with the Church root for the success of his movies, even when they suck.
P.I. Daniel Powell, who claims to have been hired by the Church to tail the father of Scientology leader David Miscavige, joked with cops ... Tom was the biggest moneymaker by far in the Church.
In fact, Powell wisecracks that Tom is probably paying the $10k a week salary to keep tabs on and harass Ronald Miscavige.
But the movie reference is hilarious, and we're guessing he's referring to "Oblivion," which was released in April 2013, one month before the P.I. had his chitchat with cops.