It may be impossible to completely screw up an undercover cop movie, with the very nature of the premise guaranteeing some vicarious hopscotching over the morality line. Judged on plot alone, The Infiltrator is a solid, mid-level walk on the seedy side, with enough based-on-fact dirty business to hold the interest. When you factor in a terrific-even-for-him lead performance by Bryan Cranston, however, it zooms up the ranks into something well worth leaving the couch for. by Andrew Wright