Jarod becomes head of security at a Las Vegas casino as he attempts to solve the mystery behind the assault of a showgirl.

Sydney and Miss Parker speak with a junkyard owner about Jarod’s latest activities. The owner explains that Jarod busied himself reading hundreds of books about mathematics and science. He also describes how Jarod sat in a rocking chair for fourteen hours flipping a half-dollar. Sydney peruses a book Jarod left behind entitled Making Odds Even and realizes it’s a message of some sort. Meanwhile, in a Las Vegas casino, Jarod, now Mr. Felson, uses his vast knowledge to win over a hundred thousand dollars.

The casino management grows suspicious and has Jarod escorted into the office of Peter Morgan. But it soon becomes apparent that Jarod deliberately attracted attention so he could meet Morgan in person, and to show his goodwill, returned his winnings. Jarod then shows Morgan how an unscrupulous pit dealer, Martin Rawlings, has been cheating the casino via sleight of hand. Jarod then exposes Morgan’s security chief, Davis, as being a participant. Morgan fires Davis then hires Jarod as his replacement.

Later, Jarod strikes up a friendship with an Elvis impersonator named Bernie Baxley. Meanwhile, back at the Centre, Sydney points out that Jarod traced over every number “8” in a statistics book found at the junkyard. Jarod becomes enamored with the children’s book Curious George and asks a little girl if she can identify the Man in the Yellow Hat.

Peter Morgan introduces Jarod to Steve Hanlon, the casino club’s owner, who gives him permission to do whatever it takes to keep corruption out of his business. A short time later, Morgan introduces Jarod to his wife, Kitty. Morgan then tells Jarod that, deep down, Steve Hanlon is very much “old Vegas.” Later, Jarod makes his way to a hospital, where he visits showgirl Maggie Blair, who lapsed into a coma after being physically assaulted by an unknown assailant. Anxious to catch Jarod, Miss Parker turns to a wiseguy named Johnny for help. She tells him that unless he cooperates and locates Jarod, she will expose his stolen car operation. In return for his help, she offers to pay him handsomely.

Bernie the Elvis Impersonator informs Jarod that the casino is no longer interested in his act. Jarod approaches Morgan and Hanlon about financial discrepancies for the month of July. Morgan explains how a showgirl was attacked in the casino’s parking garage, causing revenue to drop some thirty percent. As Hanlon and Morgan explain, a megabuster jackpot hit two days later, and customers began returning. Later, Jarod examines surveillance video taken by a camera in the casino’s garage area. By closely examining the tape, he realizes the footage was actually photographed much earlier than indicated on the tape’s front label. He receives another break when he realizes a mark left on Maggie’s face matches an oddly-shaped wristwatch warn by Peter Morgan. In flashback, a Young Jarod attempts to solve Marilyn Monroe’s “murder.” Sydney and Broots react when Jarod mails a “barrel full of monkeys” figure to the Centre. Later, Johnny tells Miss Parker that Jarod can be found in the Marquis Casino in Las Vegas. Meanwhile, Jarod approaches Kitty and accuses her of having found the real security tape taken on the night of the attack, which clearly shows Maggie leaving the Marquis with her husband, Peter Morgan. Jarod warns that Morgan has a history of abusing women, and shows her his rap sheet to prove his claim. Kitty is horrified. Jarod telephones Hanlon and Morgan and warns that he has found yet another serious problem with the casino. He arranges to meet both men the following morning.

The next day, Jarod tells Peter Morgan that someone has been double counting cash outlays. He also tells Morgan that it’s his belief that the scam is tied to an armored car courier service. Jarod convinces Morgan that if he, the casino president, greets the courier personally, the courier will play right into his hands. Later, Morgan tells the courier it’s “business as usual.” But he is unaware that the courier is actually Bernie (the Elvis impersonator) in disguise. Jarod shows Hanlon video footage of the exchange between Morgan and the courier making it seem as if Morgan was in on the scam.

Outraged, Hanlon has his men beat up Morgan (just as Morgan has assaulted Maggie). Jarod exits Hanlon’s office. Soon after, Miss Parker, Sydney and some Sweepers spot him. A chase ensues, but Jarod uses his status as head of security to have them all detained. Later, as Sydney and Miss Parker search Jarod’s old lair, a maid presents Sydney with a copy of Curious George. Inside is an inscription: “To the man in the yellow hat, from the monkey who got away.” Jarod, now acting as a member of the National Wildlife Federation, releases a monkey back into the jungle.