Neil Sandilands

An operation to catch a businessman who is using acts of terror to manipulate the stock market is compromised, forcing the NCIS team to search for new leads.

While Lexa does her best to maintain peace and order within the angry and vengeful clans, Clarke uncovers a strange and game-changing truth. Meanwhile, a flashback reveals one of the darker chapters of humanity's past.

When a 200-year-old medicine jar shatters in a teenager's palm, she is admitted to the hospital with symptoms closely linked to smallpox; House must make a dangerous decision that puts his life in jeopardy; Wilson and Sam comfort a young patient.

A powerful armoured villain threatens to level the city if the Flash doesn't appear, and Cisco decides to break Barry out of the speed force.

Native American artifact collectors are attacked by a meta named Mina Chayton, who has the power to bring inanimate objects to life. Meanwhile, Barry turns to a surprising ally for help.

Amunet kidnaps Caitlin and coerces her into performing a difficult medical task. The Thinker traps Barry in a speedster-proof prison, leaving Iris having to choose whether to save Barry or Caitlin.