Jake plays prisoner when he goes "inside" to find out the location of some stolen diamonds from a gang of incarcerated criminals. Mal finds out that Rose has been keeping a big secret from him. Tinny's money-making scheme starts to take root.
The Doyles are employed to help a comedian on the edge of a comeback find a dangerous stalker. Leslie defines the boundaries for the men in her life, including Jake. Allison reveals something to Jake that could be a game-changer.
It's matrimony -- Doyle style -- as Jake and Mal are tasked with finding the person responsible for sabotaging an upcoming wedding. Mal and Rose fix a bump in the road in their relationship as Jake and Allison hit a stride in theirs. Des comes to Tinny's rescue but ends up exploding her plans in the process.
When an old Doyle family friend accidentally goes missing at sea, the Doyles are hired by his daughter to find out what really happened. Jake is forced to bail out Christian and picks up another line of business and a pile of new debt.
Jake and Mal are called to check into some death threats that have been made to a respected psychiatrist. An old "friend" from the past shows up and makes an interesting proposition to the Doyles. After Leslie's close call, Jake and Leslie find themselves struggling a little in their new romantic relationships.
The Doyles reluctantly take on a case from a dodgy "old friend" when he promises them a big payday. Jake and Allison encounter friction when their professional lives impose on their personal relationship.
Crime novelist Garrison Steele returns again to both hire and torment Jake to help him research a murder case. Jake and Leslie struggle to keep their mutual affection for each other in check. Allison receives much-needed help from Jake.
Jake buys an expensive gift for Allison only to have it stolen by a thief. The Mayor finds himself in a compromising position and asks for Jake's help and his silence. Leslie thinks she's being followed.
The Doyles are hired by a real estate agent to investigate a series of strange occurrences at the site of her housing development. Leslie uncovers suspicious facts about the Mayor. Allison makes Jake a serious proposition.
When Tinny and Des are kidnapped in broad daylight, Jake is forced to confront a dangerous man from his past to get them back. Leslie loses something else very precious to her. Jake makes a decision about his future with Allison.