Season 4, Episode 6

The Cost of Doing Business

7.8/ 10December 17, 201543 min

Morland offers to act as one of his son’s “Irregular” consultants so that he can lend Sherlock and Joan his considerable resources to help them solve a case.

Directed by
Aaron Lipstadt
Written by
Jason Tracey

Guest stars

All episodes — Season 4

Open season page
  1. S4 E1

    The Past is Parent

    Nov 5, 20157.743 min

    When Holmes faces criminal charges in the aftermath of his recent violent behavior and relapse, his powerful father arrives in New York to fix his estranged son’s legal difficulties by any means necessary. Also, with Holmes and Watson’s con

  2. S4 E2

    Evidence of Things Not Seen

    Nov 12, 20157.543 min

    When Morland offers to use his influence to have Sherlock and Joan reinstated as consultants to the NYPD, Sherlock’s mistrust of his father makes him question his motivation to help. Also, with no work offers coming in, Watson wrangles a gi

  3. S4 E3

    Tag, You're Me

    Nov 19, 20157.942 min

    When Sherlock finds himself distracted by his father’s ongoing presence in New York City, he offers to help Morland resolve a work issue in exchange for his prompt departure home. Also, Holmes and Watson’s investigation into the double murd

  4. S4 E4

    All My Exes Live in Essex

    Nov 26, 20157.543 min

    When Holmes and Watson investigate the murder of a fertility lab technician, they discover the woman had a secret personal life that leads them to multiple suspects. Also, the tables are turned on Watson when she’s investigated by an NYPD d

  5. S4 E5

    The Games Underfoot

    Dec 10, 20157.541 min

    When an archeologist is murdered, Holmes and Watson believe the man may have been killed for what he discovered during his last excavation in a local landfill. Also, Sherlock’s relationship with Alfredo, his friend and former sobriety spons

  6. S4 E7

    Miss Taken

    Jan 7, 20168.343 min

    When Watson’s stepfather writes a crime novel based on her work with Holmes without her knowledge, an underlying issue in their relationship is revealed. Also, as Holmes and Watson investigate a retired FBI agent’s murder, they discover th