Columns: No. | # | Title | Directed by | Written by | U.S. viewers (million) | Original air date | Production code
80 | 1 | "High Exposure" | Alex Zakrzewski | Nicolas Falacci & Cheryl Heuton | 8.21 | October3,2008 | 501 | 81 | 2 | "The Decoy Effect" | Ralph Hemecker | Ken Sanzel | 8.01 | October10,2008 | 502 | 82 | 3 | "Blowback" | Dennis Smith | Robert Port | 8.68 | October17,2008 | 503 | 83 | 4 | "Jack of All Trades" | Stephen Gyllenhaal | Andrew Dettmann | 9.33 | October24,2008 | 504 | 84 | 5 | "Scan Man" | Craig Ross, Jr. | Don McGill | 10.72 | October31,2008 | 505 | 85 | 6 | "Magic Show" | John Behring | Sean Crouch | 11.28 | November7,2008 | 506 | 86 | 7 | "Charlie Don't Surf" | Emilio Estevez | Steve Hawk | 9.29 | November14,2008 | 507 | 87 | 8 | " Thirty-Six Hours " | Rod Holcomb | Julie Hébert | 11.30 | November21,2008 | 508 | 88 | 9 | "Conspiracy Theory" | Dennis Smith | Robert Port | 9.88 | December5,2008 | 509 | 89 | 10 | "Frienemies" | Steve Boyum | Nicolas Falacci & Cheryl Heuton | 9.18 | December19,2008 | 510 | 90 | 11 | " Arrow of Time " | Ken Sanzel | Ken Sanzel | 10.14 | January9,2009 | 511 | 91 | 12 | "Jacked" | Stephen Gyllenhaal | Don McGill | 11.02 | January16,2009 | 512 | 92 | 13 | "Trouble In Chinatown" | Julie Hébert | Peter MacNicol | 10.96 | January23,2009 | 513 | 93 | 14 | "Sneakerhead" | Emilio Estevez | Aaron Rahsaan Thomas | 10.30 | February6,2009 | 514 | 94 | 15 | "Guilt Trip" | Gwyneth Horder-Payton | Mary Leah Sutton | 9.10 | February13,2009 | 515 | 95 | 16 | "Cover Me" | Rob Morrow | Andrew Dettmann | 9.62 | February27,2009 | 516 | 96 | 17 | "First Law" | Steve Boyum | Sean Crouch | 10.12 | March6,2009 | 517 | 97 | 18 | "12:01 AM" | Ralph Helmecker | Robert Port | 9.51 | March13,2009 | 518 | 98 | 19 | "Animal Rites" | Ron Garcia | Julie Hébert | 9.80 | April10,2009 | 519 | 99 | 20 | " The Fifth Man " | Ken Sanzel | Don McGill | 8.82 | April24,2009 | 520 | 100 | 21 | " Disturbed " | Dennis Smith | Nicolas Falacci & Cheryl Heuton | 9.70 | May1,2009 | 521 | 101 | 22 | "Greatest Hits" | Stephen Gyllenhaal | Andrew Dettmann | 9.57 | May8,2009 | 522