Life for three generations of the Christie family is thrown into disarray when a disastrous get-rich-quick scheme threatens to ruin the family business.

Rick returns to the business, only to discover Matt has taken his place. Kate and Matt work together to investigate the deaths of a couple in a car accident, and Kate ignores Lily's advice to tell her parents the truth.

Kate and Matt are unexpectedly thrown together on an out-of-town surveillance job while Rick is forced to face the music regarding his investment.

Kate is drawn into the world of high class male escorts while investigating a credit card fraud. Meanwhile, a missing person case reminds Rick of the risks people take for love, and Emma schemes to reunite her mum with Rick.

Rivals Matt and Rick go undercover on a major fraud case to impress Kate. Chad and Minnie have a showdown in court, with unexpected results, and Matt gets more than he bargained for when he dares Kate to be more spontaneous.

Matt is hired to locate a lottery winner by a woman determined to claim the prize from her missing husband. Kate's experience as a single mother affects her judgement in a case and Emma provides Kate with a series of headaches.

Kate's past returns to haunt her when her daughter Emma goes missing, Matt and Chad go undercover to catch a cheating management consultant, and Chad's life takes a surprising turn when an old flame makes him a tempting offer.

Kate and Rick arrange some sting operations in an effort to catch a corrupt builder. Jimâ's loyalty ends up being tested after he is forced to investigate a friend over an alleged robbery.

Tensions are running high as Kate and Matt look into the case of a cheating spouse. Rick manages to expose an insurance scam involving broken ankles, theft and misguided love. Jim discovers a tragic family secret as he investigates a house fire.

Matt is employed to investigate doping in the greyhound racing industry. Rick and Kateput their reputations on the line after they are accused of wrecking a school formal.

Matt's day turns dangerous when he tries to repossess a car from an underworld boss, Kate receives a death threat from an unlikely source, and Rick has a breakthrough in the hunt to reclaim his lost $100,000.

Rick risks everything to repay his debts to Kate and Jim, Matt makes a fateful decision for the sake of Kate's happiness, and Jim and Claire's paths collide when they take separate action to help salvage Lily's university career.