The Cobalt Fissure (S02E20)
S02E20
A random murder outside UHOP turns out to be no coincidence at all. The brutal crime immediately draws the attention of Watson and Sherlock Holmes, but the deeper shock comes when the investigation reveals a figure from their shared past has returned. Old wounds reopen as the pair realizes this killing is only the beginning of something far more personal and dangerous.
Show
Watson
Episode
S02E20
Air Date
May 03, 2026
Season 2 Episodes
S02E01
A Son in the Oven
S02E02
Back from the Dead
S02E03
Expletive Deleted
S02E04
Happy When It Rains
S02E05
Lucky
S02E06
Buying Time
S02E07
Giant Steps
S02E08
Livvy Sees the Doctor
S02E09
Shannon Says Bex Loves Micah
S02E10
Never Been CRISPR'd
S02E12
A Family Meal
S02E13
For a Limited Time Only
S02E14
Wrongful Life
S02E15
A Third Act Surprise
S02E16
Respect the Process. Respect the Quirks
S02E17
Unsolved Mysteries
S02E18
Sic Semper Tyrannis
S02E19
Rule of Three
S02E20
The Cobalt Fissure