The Melbourne based crime-scene cleaning couple are called to a hotel to clean-up after the murder of a popular motivational author, stabbed apparently by one of the staff whose pleas of innocence result in the duo staying as guests.

Charlie and Nicola's hazard suits may not be the latest collection from Paris or Milan but it doesn't stop them from entering the glamorous, fabulous and superficial world of runway shows, photo shoots and haute couture.

It's a murderous level of muscle burn when a bodybuilder is found drugged and baked to death on a sunbed. There's a bulging mass of suspects: an overshadowed brother, a jealous rival, a devoted trainer and a long time grudge-holder.

They say life's a cabaret, but that's hardly the case when the leading lady in the musical theatre show Lost Soul is found murdered beneath the stage.

The Best Man is poisoned on the eve of a wedding on the glamorous Scaletta family estate. He was the CFO of their successful family business, and advocating for some big changes within it.

A vet killed by an overdose of horse tranquilizer sets off an investigation at stables that house champion racehorses. It looks like an inside job, and Nicola and Charlie go to dangerous lengths to suss out the truth.

When Jennifer Travers is murdered on her yacht, Nicola and Charlie navigate their way through a series of clues. From a cut that won't heal, a hidden compartment, and a lovelorn message.

A homeless man is found crushed to death under a floating wall at a modern art gallery. When the death is declared a burglary gone wrong, a doubtful Nicola and Charlie investigate.

When upper crust James Langlan is harpooned through the chest in a heritage bathing box, it sends a dark ripple through a wealthy seaside community. Was it a robbery gone wrong? Or a crime of passion?

A beautiful young woman has an ugly end when she lands in the garden below a cosmetic surgery clinic for the rich and famous. Did she commit suicide as retribution against the clinic? Or was it murder?

When Gary, the big cat keeper dies and Marie, the hippo keeper goes missing, it looks like the food chain has been reversed at Maabade Zoo. But it's not the animals out for blood, it's murder.

Nicola and Charlie find a bloody mess at a restaurant where the celebrity chef has gone missing and is presumed dead. They learn the chef was a cruel dictator in the kitchen, and several employees may have wanted him dead.