Baker Street Wiki
Baker Street Wiki

Who Is That Masked Man is the thirteenth episode of season four of Elementary. It first aired on CBS on the 25th February, 2016.


When Holmes' investigation into the attempt on Morland's life pushes their strained relationship to the breaking point, the identity of Sherlock's mother is revealed. Also, when three gang members are murdered, Holmes and Watson are amazed when an elderly woman emerges as their prime suspect.


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  • Elizabeth Sung - Bai May-Lung
  • Eddie Korbich - Sven Eklund
  • Joe Mazzello - Griffin
  • James Hong - Meng Zhou
  • Tzi Ma - Xi Hai Ching
  • Kevin Kilner - Michael Haas
  • Charlotte Bydwell - Soleil

Season Three Navigation[]

Season Four
#01 The Past Is Parent#09 Murder Ex Machina#17 You've Got Me, Who's Got You?
#02 Evidence of Things Not Seen#10 Alma Matters#18 Ready or Not
#03 Tag, You're Me#11 Down Where the Dead Delight#19 All In
#04 All My Exes Live in Essex#12 A View With a Room#20 Art Imitates Art
#05 The Games Underfoot#13 A Study in Charlotte#21 Ain't Nothing Like the Real Thing
#06 The Cost of Doing Business#14 Who Is That Masked Man?#22 Turn It Upside Down
#07 Miss Taken#15 Up to Heaven and Down to Hell#23 The Invisible Hand
#08 A Burden of Blood#16 Hounded#24 A Difference in Kind