A worried Casey is having difficulty writing her valedictorian speech for graduation, which she blames on Derek. Edwin is concerned that he won't be able to live up to Derek's reputation at J.S. Thompson High when he goes there in the fall.
To be eligible for college athletic scholarships, "D" average Derek seeks George and Edwin's help in passing all of his final exams. Meanwhile, Nora and the girls try to get a stressed out Casey to stop over-studying and relax. When neither of these plans work, Derek and Casey are forced to help each other.
When Christmas plans go awry, Aunt Madge encourages Derek to help restore the family's holiday spirit.
Murdoch is drawn into the naughty world of Victorian erotica and blackmail when he investigates the murder of Abigail Tunstall, a young woman who had been posing for salacious photographs. Interviews with Abigail's friends and family and the discovery of one of her erotic photos help Murdoch zero in on the location where the pictures were taken – a studio owned by a photographer named Marcus Evans. When Murdoch searches through photo collections for clues to Abigail's murder he makes a startling discovery – one of McHugh's erotic models is none other than Sally Pendrick, the vivacious and beautiful wife of Murdoch's nemesis, the rich and powerful industrialist James Pendrick.Watch Now:Amazon
Murdoch is called upon to investigate an exceedingly strange murder. The deceased was found inside a room locked from within with no other entrance. But there's more to the case than that – the victim appears to have exploded and burned, yet there is no trace of an explosion or fire. Before Murdoch can proceed with his investigation, the case takes a bizarre turn when old friend and world-renowned inventor Nikola Tesla appears, announcing cryptically that he is "too late."
Derek becomes jealous when Sally and her ex-boyfriend Patrick start spending more time together. Derek claims that people of the opposite gender cannot be friends with each other, and Casey sets out to prove him wrong. Edwin is suspicious that George and a close friend of his are having an extramarital affair.Watch Now:Amazon
Derek breaks up with Sally after she announces her plans to attend an out-of-province university in the fall. Derek claims he's fine with the breakup, but Casey and Edwin don't believe him. Meanwhile, Lizzie and Marti take care of a lost dog.
Casey is in panic mode after the diary that details her unsettling romantic dreams about Truman goes missing. Believing that Derek and Edwin took it, Lizzie and Marti attempt to get the diary back by making their stepbrothers' lives miserable.Watch Now:Amazon
When Derek starts to have a crush on a girl named Kendra (Casey's new study partner), Casey tricks him into changing his laid-back image into a more mature person because he wiped out Casey's report on the computer. While George, Edwin, and Derek are afraid of the mice living in their house they try to kill them, but Lizzie won't allow it and makes the mice her new pets.Watch Now:Amazon
When Derek already has a girlfriend, Casey is shocked when he asks out a friend of hers, Lucy. Casey asks Emily to dig up information on whether Max is available or not. Meanwhile, Nora has set up a dinner with another family, but some members of her family object.Watch Now:Amazon
Nora decides to quit her job for a while to spend more time with her family who she assumes she's been neglecting. But Casey risks losing her 'cool' status when Nora tries to recruit her new friends to help at the high school fun fair.
Casey tries out for the school cheerleading squad. But not even her phenomenal dancing skills are enough to get her acceptance, especially when the head cheerleader is Max's ex-girlfriend.
Frankie works hard to keep her android identity a secret, but makes new enemies during a math competition at school; Frankie must risk being discovered when a bug in her system forces her to plug herself directly into the school's internetWatch Now:Amazon
Casey has some great ideas to improve the school so she decides to run for school president. But, when Emily advises her to keep in mind the risk of destroying her reputation, Casey decides to enlist Derek to run for her, since he is popular.
Derek switches test papers with Casey, and then lures her into a scheme that will keep them both out of trouble; Edwin, Lizzie, and Marti feel that they are doing too many chores for the amount of allowance they are getting.
Casey develops a mysterious allergic reaction after Max gives her his football jacket. George gets fed up with Derek's jokes and makes a deal with Derek that if he can be nice for one week, he won't have to pay for the insults he said.Watch Now:Amazon
A surprise visit from Edwin's friend Teddy turns into a frequent occurrence that makes the entire McDonald-Venturi household uncomfortable. Despite warnings from Emily, Casey decides to go out on a date with Truman.