After sniffing out a terrorist's bomb, a school pot dealer, and an allergist's remedy's ingredients, a man with an extraordinary nose is asked to sniff out a killer in a paintball club.

While Alex gets in serious trouble over drugs, Viktor calls in The Sniffer when a couple of sniper assassinations with no obvious connection leave the police basically clueless.

Police, finding Alex with a gun in his hand, a corpse at his feet, and a bag of pot, arrest the boy for murder, and the by-the-books detective in charge won't let the Sniffer or Viktor near him.

Four soldiers slain in a military hospital put the Sniffer and the SBI on the elusive trail of a killer with grotesque facial scars who's hunting the camp goon squad.

The young son of a prominent businessman is kidnapped. Clues detected by the Sniffer change over time and bring about a specific but off-kilter profile of the culprit.

When a gangster's murder sets off a series of gang wars, the Don calls in a favor from The Sniffer to smell out the rat in his organization, leaving Victor to wonder how his friend was once connected to a crime boss.

Receiving a remarkable package (one without scent) begins a runaround for The Sniffer and Victor trying to stop the twisted game of a playful serial killer toying with them.