The Best Episodes Written By Greg Walker

When rancher Ralph Lamb becomes a sheriff, he begins investigating the murder of the governor's niece and instantly clashes with mobster Vincent Savino.

Director: James Mangold

Writer: Greg Walker

The team searches for a missing mother who they believe may be searching for her son, who is also missing.

Director: N/A

Writer: Greg Walker

Chet Collins has been searching for his son since the boy was kidnapped four years earlier on a camping trip, and is the one case that Jack has never been able to forget. When Chet disappears, leaving behind only his wedding ring and the mountains of debt he had accumulated in his search, Jack will go to any lengths to find Collins and save him from himself.

Director: Paul Holahan

Writer: Greg Walker

The team find themselves up against the ropes as multiple mysteries arise in the case of a boxer. Dante Jones disappears moments before a bout with a $500,000 purse that which could have made him a title contender. Jack suspects it's stunt, but Vivian, a Jones fan, can't believe that the charity-loving, straight-arrow fighter would go doewn that low road. The search goes in a new direction when his younger brother who he is always bailing out of trouble, vanishes. Then it's learned he has made 2 million dollers in the past five years,but he only has $6000 in his bank account.

Director: Paul Holahan

Writer: Greg Walker

This time, the team searches for a delusional appearing Sci-fi fanatic who disappeared from his appartment after ranting on about those ""out to get him"" (before peeling back the tinfoil covering his windows). Jack also has to deal with the consequences of his actions in the affair and how it affected the rest of the team.

Director: Craig Zisk

Writer: Greg Walker

Jack goes missing after taking a case into his own hands which soon becomes intertwined with a human trafficking prostitution case that Vivian is working on.

Director: John Polson

Writer: Greg Walker

They search for a young high-school teacher who disappeared after a night class in the Bronx, turning up contradictory information about the subject.

Director: Charles Correll

Writer: Greg Walker

A flower that comes from a reopened "Level Three" of the fertilizer plant brings strange reactions from several people, including Jonathan, Lana, and Pete.

Director: James Marshall

Writer: Greg Walker

After an explosion Lana finds herself getting visions of a serial killer...and his next target is Chloe. Meanwhile Lex and Roger look further into the meteor shower and determine that something besides meteors hit Smallville that day.

Director: Terrence O'Hara

Writer: Greg Walker

Delia , a television reporter, disappears in the middle of the investigation of a nightclub owner who is a suspected drug dealer. They also discovers that Delia was working on the case of a murderer on death row who she thought was innocent, and who might be linked to an assistant district attorney working with Jack on the case.

Director: Peter Markle

Writer: Greg Walker

A missing-persons case becomes a criminal investigation when, after a recently engaged woman disappears, it turns out that she was running a confidence scheme.

Director: Randall Zisk

Writer: Greg Walker

When a female ex-cop-turned-bounty-hunter is shot then goes missing the team must investigatesher were about's

Director: Paul Holahan

Writer: Greg Walker

When Ian Norville disappears on a field trip to a museum in Manhattan, the team gets involved, but it isn't long before Jack turns his suspicion to his father, Daniel, who soon admits that he didn't take the necessary precautions with his son, who happens to be autistic.

Director: N/A

Writer: Greg Walker

Danny is skeptical when the pregnant girlfriend of his missing estranged brother, Rafael ""Rafi"" Alvarez, and mother of their 9-year-old son, tells him that Rafi has transformed himself into a responsible family man, who recently obtained a loan to open his own body shop. But Danny's investigation uncovers that Rafi has been seen with a convicted car thief, and the large sum of cash he'd been flaunting for his purchase of a body shop didn't come from the bank. Though Jack makes the point that Rafi may have legitimate explanations for the suspicious circumstances, Danny braces himself for the very real possibility that his brother may have put himself in harm's way.

Director: N/A

Writer: Greg Walker

Jack finds himself in the hotseat when a young white woman and a young black man, go missing on the same night and Jack is ordered to put more of the team's resources into finding the young woman.

Director: N/A

Writer: Greg Walker

Jack and Samantha head to Los Angeles to look into the disappearance of a man who vanished after attending a funeral.

Director: N/A

Writer: Greg Walker

The team searches for a man who goes missing after a late night dive and try to zero in on who could be responsible for his disappearance. Meanwhile, Danny and Elena take their relationship to another level.

Director: Jeannot Szwarc

Writer: Greg Walker

An abusive and hot-tempered football coach gains the ability to control and project fire.

Director: Greg Beeman

Writer: Greg Walker

The team believes that the past of a missing psychologist's brother might have played a role in his disappearance. Martin's relationship with Kim takes a spicy turn.

Director: N/A

Writer: Greg Walker

After suffering a heart attack, Andy tells a young pregnant woman that in order to save her and her unborn child she must get a heart transplant. However, unexpected complications with the donor's family place the transplant in jeopardy.

Director: Christine Moore

Writer: Greg Walker

While protecting a man due to testify against the Morley cigarette company, Skinner is horrified when the witness dies mysteriously. What the agents soon discover is that a new brand of cigarette has a dangerous secret.

Director: Kim Manners

Writer: Greg Walker

Malone's team joins forces with Gil Grissom, a CSI from Las Vegas, and his team as they track a serial killer with ties to New York. The crossover starts on CSI: Crime Scene Investigation S08E06 Who and What (I).

Director: Jonathan Kaplan

Writer: Greg Walker

After Sparks attempts to quarantine Molly, she and her family seek refuge on a remote island with her estranged father, Quinn. When the agency closes in on their whereabouts, Ethan is exposed to grave danger. Meanwhile, Yasumoto experiments with a strange and deadly substance.

Director: Paris Barclay

Writer: Greg Walker

Rachel and Kory travel to the convent where Rachel was raised, while Dick compares his own orphan experience to Rachel’s. Meanwhile, Rachel befriends Gar Logan.

Director: Kevin Rodney Sullivan

Writer: Greg Walker

The Titans set out to rescue Rachel’s birth mother from a mysterious psychiatric facility, but find themselves confronting their deepest vulnerabilities and fears.

Director: Alex Kalymnios

Writer: Greg Walker