Elementary

Sherlock is knocked sideways by a medical diagnosis, while a new case surfaces when a man goes missing after a sex tape he recorded emerges online.

Joan and her half-sister have conflicting reactions when their estranged biological father dies, and a shocking murder sparks a search for stolen plutonium.

A Revolutionary War re-enactment ends in real bloodshed when one of the participants is murdered. Sherlock becomes frustrated with the length of his cognitive recovery.

Joan considers making a major change after reading her own therapy file when she and Sherlock look into the murder of her former psychologist.

Sherlock finds himself in possession of a severed head and a temporary case of amnesia, leaving Joan to help him retrace his footsteps to put the pieces together.

Sherlock and Joan investigate the murder of an ex-Yakuza gang member, while Captain Gregson is blindsided by a stunning confession from his police chief daughter Hannah.

As Sherlock's recovery hits a setback, his commitment to catching a serial killer grows into an obsession - especially as the latest victim is close to his inner circle.

Sherlock and Joan's hunt for the killer of a woman found encased in cement takes them inside the clean technology industry.

Alfredo asks for Sherlock's help with an illegal endeavour in order to save his brother. The sleuth also investigates the poisoning of a biology professor.

As Sherlock tries to repair his relationship with his father, he and Joan find a link between a recent case and the world of Egyptian antiquities.

Sherlock engages with an old enemy to help his father while looking for the killer of a lawyer who was reviewing a tobacco company's finances with Joan.

Sherlock and Joan investigate the disappearance of a young woman who led a double life as an online dominatrix to rich men.

Sherlock and Joan discover a murder victim had been leading a decades-long secret career as a contract killer. Joan's path to adopting a child suffers a setback.

Gregson and Bell are trapped inside the police station after a bio-terrorism attack, and Joan tries to convince her mother that she needs more care for her dementia.

Sherlock and Joan's investigation into the murder of a religion professor puts them on the hunt for a killer connected to the occult.

Sherlock and Joan discover that the murder of a robotics engineer may be connected to his secret research into teleportation.

When zoologist is murdered, it soon becomes clear he was killed either for his love affairs or his trailblazing research.

A killer is selecting victims based on the visions of a so-called seer - one who also predicted Sherlock Holmes' death.

Sherlock and Joan race to locate a missing woman when Harlan Emple becomes the prime suspect in her disappearance.

Sherlock's deadly conflict with his former friend Michael intensifies when another victim surfaces.

Sherlock and Joan face their greatest challenge yet when a murder investigation threatens the future of their partnership.