Season 2, Episode 18

The Hound of the Cancer Cells

7.6/ 10March 13, 201443 min

When a famous cancer researcher is found dead, Holmes and Watson must determine if the scientist’s untimely demise was tied to his latest cutting-edge invention. Meanwhile, Bell is finally cleared to re-enter the field.

Directed by
Michael Slovis
Written by
Bob Goodman

Guest stars

All episodes — Season 2

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  1. S2 E1

    Step Nine

    Sep 26, 20137.643 min

    Sherlock is called to London to revisit an old case, where he is forced to face his older brother, Mycroft. Although the siblings suffered a drastic falling-out a few years earlier, Mycroft allows Sherlock and Joan to stay in his new home,

  2. S2 E2

    Solve for X

    Oct 3, 20137.843 min

    When a well-respected mathematician is found dead, Holmes and Watson set out to solve a murder and the purpose of the highly guarded equation he was trying to decipher. Meanwhile, Watson is conflicted when the son of a former patient approa

  3. S2 E3

    We Are Everyone

    Oct 10, 20137.443 min

    When Holmes and Watson set out to track down a civil contractor who leaked classified information, their lives are disrupted when they are targeted by the group of cyber-activists protecting him. Meanwhile, Joan takes the advice of a friend

  4. S2 E4

    Poison Pen

    Oct 17, 20137.343 min

    When a financial consulting company CEO is poisoned to death, a woman from Sherlock's past who emerges as a possible suspect.

  5. S2 E5

    Ancient History

    Oct 24, 20137.643 min

    Holmes and Watson find themselves digging through the dark world of the mob to find a killer when they discover the body of a former assassin. Meanwhile, Watson helps a close friend track down a mystery man who swept her off her feet.

  6. S2 E6

    An Unnatural Arrangement

    Oct 31, 20137.143 min

    When Captain Gregson’s home is invaded, Holmes and Watson work to find the masked gunman before he strikes again. Meanwhile, Gregson gives his team some insight into his private life.