With its two fine stars and gripping opening scenes "To Catch A Killer" shoulda / coulda been a top-class cop / psycho thriller, but co-writer (with Jonathan Wakeham) / director Damián Szifron plods, stumbles & loses his way - to deliver something way more ordinary. When an ace sniper kills 20+ folk one Baltimore NYE, under fire senior FBI agent Ben Mendelsohn and keen, astute (but troubled) beat cop Shailene Woodley team up to figure him out & hunt him down - though bureaucratic nincompoops, elusive witnesses and false leads slow them up. Support from the likes of Ralph Ineson & Jovan Adepo couldn't save this one from its own hum-drum mediocrity.