Once you find out just what's going on, you'll probably laugh at all of the absurd ways Rowan Joffe (The American, 28 Weeks Later), who is not very faithfully adapting the novel by S.J. Watson, has to contort the plot in order to get us all the way to the ridiculous climax that is supposed to be
exciting and revelatory, when all of the while it is quite
depressing and only raises more questions
than answers.