Columns: No. | # | Title | Directed by | Written by | U.S. viewers (million) | Original air date | Production code
62 | 1 | " Trust Metric " | Tony Scott | Ken Sanzel | 9.38 | September28,2007 | 401 | 63 | 2 | "Hollywood Homicide" | Alexander Zakrzewski | Andy Dettmann | 9.76 | October5,2007 | 402 | 64 | 3 | "Velocity" | Fred Keller | Nicolas Falacci & Cheryl Heuton | 9.16 | October12,2007 | 403 | 65 | 4 | "Thirteen" | Ralph Hemecker | Don McGill | 9.85 | October19,2007 | 404 | 66 | 5 | "Robin Hood" | J. Miller Tobin | Robert Port | 9.70 | October26,2007 | 405 | 67 | 6 | "In Security" | Stephen Gyllenhaal | Sean Crouch | 9.34 | November2,2007 | 406 | 68 | 7 | "Primacy" | Chris Hartwill | Julie Hébert | 9.94 | November9,2007 | 407 | 69 | 8 | "Tabu" | Alex Zakrzewski | Sekou Hamilton | 10.26 | November16,2007 | 408 | 70 | 9 | "Graphic" | John Behring | Nicolas Falacci & Cheryl Heuton | 10.12 | November23,2007 | 409 | 71 | 10 | "Chinese Box" | Dennis Smith | Ken Sanzel | 9.75 | December14,2007 | 410 | 72 | 11 | "Breaking Point" | Craig Ross, Jr. | Andrew Dettman | 9.81 | January11,2008 | 411 | 73 | 12 | "Power" | Julie Hébert | Julie Hébert | 10.08 | January18,2008 | 412 | 74 | 13 | "Black Swan" | John Behring | Ken Sanzel | 10.00 | April4,2008 | 413 | 75 | 14 | "Checkmate" | Stephen Gyllenhaal | Robert Port | 9.54 | April11,2008 | 414 | 76 | 15 | "End Game" | Dennis Smith | Don McGill | 9.64 | April25,2008 | 415 | 77 | 16 | "Atomic No. 33" | Leslie Libman | Sean Crouch | 10.33 | May2,2008 | 416 | 78 | 17 | "Pay to Play" | Alex Zakrzewski | Steve Cohen & Andrew Dettman | 9.33 | May9,2008 | 417