Overview: When Billy scares Mallory enough to make her consider moving out of town, Spencer must try and convince her to stay.
Overview: To raise money, Spencer turns the mansion into the Billy Joe Cobra museum, but runs into problems when Billy Joe becomes annoyed by the guests.
Overview: Spencer runs into trouble when he takes advantage of Billy by tricking him into doing his homework.
Overview: Spencer has to make sure everything in his house is normal when he's faced with expulsion for being weird.
Overview: Spencer runs into trouble during the school's talent contest.
Overview: Billy helps Spencer find a date to the Shorty Awards.
Overview: Billy turns Spencer into a ghost.
Overview: Billy feels neglected when Spencer pays more attention to a new video game than to him.
Overview: Spencer tries to become more popular by being a sports star so people will notice his films.
Overview: Spencer has to find a way to save his reputation when he's forced to direct a biography of Principal Ponzi.
Overview: When Billy's ectoplasm contaminates Spencer's goldfish, it mutates into a piranha that the two must dispose from the family pool.
Overview: Spencer has to find a way to get rid of Kleet after Jessica develops a crush on him.
Overview: Hoover pretends to be a fan of Billy in order to capture him.
Overview: Spencer pretends to be an accomplished director in order to get a big-time movie producer to hire him.
Overview: Spencer's attempt at a kung fu film goes awry when he casts Kleet as the villain
Overview: Spencer uses a blob of gum mutated by Billy's ectoplasm in his new movie, but has to stop it when it begins expanding and swallowing everything in sight.
Overview: Spencer throws a birthday party for Rajeev on Billy's private jet.
Overview: Spencer lies to Billy in order to attend a pop star's concert and hang out with Mallory.
Overview: Spencer has to prove to his parents that he is responsible enough to stay home alone.
Overview: Spencer tries out for the school's wrestling team in order to avoid being put in Principal Ponzi's aerobics class.
Overview: Spencer and Billy team up to make a music video, but their creative differences quickly lead to them turning against each other.
Overview: Billy's ectoplasm-smeared fur coat turns Spencer into a werewolf, and it's picture day at school.
Overview: Spencer cooks up a scheme to get Ponzi fired, but the new principal turns out to be even worse.
Overview: When Spencer arranges for Billy's former pet miniature crocodile to be brought home from the zoo, the pet turns out not to be miniature at all – and has its sights set on Hugh.
Overview: When Lolo runs for class president, promising to put Spencer and his friends in a loser trailer if she's elected, Spencer has no choice but to run against her.
Overview: When Spencer has to compete against Lolo to sell the most candy for charity, he makes the mistake of accepting Billy's help, with hilarious but disastrous results.
Overview: When Billy unwittingly turns a vintage Billy doll into a voodoo doll, then Ponzi gets a hold of it, bad things start happening to Billy.
Overview: Billy helps Rajeev win Lolo's affection by teaching him one of his songs which has amazing love powers. Things go wrong when Lolo accidentally hears Spencer singing it instead.
Overview: When Billy discovers that Madame X is no longer interested in capturing him, as she's moved onto healthier pursuits, he goes on a desperate search for a new obsessed fan.
Overview: Spencer convinces his family to be on a reality show, thinking it will be good publicity for his movies, but is unpleasantly surprised to find the show's producer is Lolo.
Overview: When Spencer stands up to Lolo and unwittingly becomes the new "king of the school", he finds that power corrupts.
Overview: Another ghost, who's a huge Billy fan, shows up at the mansion to hang out with his idol, and won't take no for an answer.
Overview: Spencer makes a deal with a famous Hollywood publicist in order to gain exposure for his movies, but has to rescue Billy when she ends up capturing him.
Overview: When Billy hears how popular pro-athletes can be, he possesses Kleet's body to try to get some fame, but his egotistical on-field antics land him in huge trouble.
Overview: Billy clones himself in order to finish a new song quickly, but when he and his clones spend the whole time goofing off, Spencer has to find a way to get the song finished or risk being labeled a fraud.
Overview: Spencer tries to sneak into the Fame Awards to see his movie idol win after Ponzi sentences him to after-school detention.
Overview: Spencer loses his necklace and can't see Billy anymore, but still has to find a way to stop Hoover when his parents decide to hire a ghost hunter.
Overview: Spencer turns the mansion into a huge haunted house for a Halloween contest, but when Billy accidentally merges with the house, it becomes a real horror fest.
Overview: Hugh takes Spencer and Rajeev into the desert for a camping trip, but the boys' plan to shoot a horror movie there goes awry when Billy's ectoplasm turns Hugh into a real monster.
Overview: Spencer has to save everyone in his school when Billy's ectoplasm-filled cologne turns them into love-happy zombies.
Overview: Spencer has to find a way to keep his summer job as head towel boy at the Beverly Beach Club when Ponzi tricks him into driving away all the guests.
Overview: Rajeev turns into a merman after Billy adds some ectoplasm to his muscle cream, and a jealous Spencer attempts to steal some of the resulting spotlight for himself.
Overview: Spencer gets accepted into the Beverly Film Academy, but enlists Lolo, Kleet, and iStevie's help in retrieving his transcript when Ponzi locks it up in a high-security vault.
Overview: Spencer has to protect Billy at school when Hoover poses as a new substitute teacher, but gets some additional help from Principal Ponzi.
Overview: When Spencer encourages Billy and Rajeev to keep each other company while he's away, the two become best buddies and make Spencer feel like the odd man out.
Overview: Hugh becomes coach of the Beverly Beverly High cheer squad and when he's injured, passes the job on to a reluctant Spencer.
Overview: Spencer tries to get Ponzi to pursue his lost dream of being a great ribbon dancer, in the hope that he'll quit his job and leave Spencer in peace.
Overview: Spencer, Rajeev and Shanila wake up in the middle of the night at a school-sponsored sleepover, with no memory of the night's events and Billy missing.
Overview: Billy gives Spencer a magical hat that allows him to gain confidence. When everyone overhears about it, they'll stop at no cost to get the hat from whoever possesses it.
Overview: When some of Billy's ectoplasm gets soaked into Principal Ponzi's wig, It causes it to become evil, and it's up to Billy and Spencer to get rid of it.
Overview: When Hugh reminds Spencer that their family tradition, known as Wrightmas, starts today, Spencer is desperate in attempts to hopefully not participate in the event.
Overview: Billy fears that he'll lose his hair. In attempts to prevent it, he uses a hair machine which causes side effects to turn him evil.
Overview: Spencer needs to come into terms with his crush. He never believed he would like him, but it seems things have ended that way.