Baker Street Wiki
Baker Street Wiki

All In is the twentieth episode of season four of Elementary. It first aired on CBS on the 10th April, 2016.


As Holmes and Watson investigate a woman's murder, they discover her death is linked to a piece of artwork that has ties to a crime that was committed when she was in college. Also, in the wake of a shocking personal revelation, Watson attempts to forge a connection with a recent client.


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  • Samantha Quan - Lin Wen
  • Christina Cox - Christa Pullman
  • Jason Dirden - Keith Elliot
  • Evan Hall - Louis Bowman
  • Margo Siebert - Amanda Neal
  • Luna Velez - Zoe Mercado
  • Quentin Mare - Ephraim Hill
  • Tijuana Ricks - Teri
  • Lauren Culpepper - Skyden
  • Andy Lucien - Shawn Tanner
  • Victoria Janicki - Phoebe Elliot
  • Zanny Laird - Marissa Kagan

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