Highlights from the Nineteenth Episode of Season 2 of Elementary

A serial killer known for biting his victims appears to be killing again, even though he was presumed dead.

Season 2 Episode 19 - Elementary - CBS.com

1. Season 2 Episode 19 - Elementary - CBS.com

A serial killer known for biting his victims appears to be killing again, even though he was presumed dead.
Lucy Liu as Joan Watson in

2. Lucy Liu as Joan Watson in "The Many Mouths of Aaron Colville" S2E19

A serial killer known for biting his victims appears to be killing again, even though he was presumed dead.
A serial killer strikes again in

3. A serial killer strikes again in "The Many Mouths of Aaron Colville" S2E19

A serial killer known for biting his victims appears to be killing again, even though he was presumed dead.
Jonny Lee Miller as Sherlock Holmes in

4. Jonny Lee Miller as Sherlock Holmes in "The Many Mouths of Aaron Colville" S2 E19

A serial killer known for biting his victims appears to be killing again, even though he was presumed dead.
Watson tracks a serial killer in

5. Watson tracks a serial killer in "The many Mouths of Aaron Colville" S2E19

A serial killer known for biting his victims appears to be killing again, even though he was presumed dead.
Watson and Sherlock track a serial killer in

6. Watson and Sherlock track a serial killer in "The Many Mouths of Aaron Colville" S2E19

A serial killer known for biting his victims appears to be killing again, even though he was presumed dead.
Sherlock Holmes in

7. Sherlock Holmes in "The Many Mouths of Aaron Colville" S2E19

A serial killer known for biting his victims appears to be killing again, even though he was presumed dead.
A serial killer appears to be killing again in 'The Many Mouths of Aaron Colville

8. A serial killer appears to be killing again in 'The Many Mouths of Aaron Colville" S2 E19

A serial killer known for biting his victims appears to be killing again, even though he was presumed dead.
Has a serial killer returned?

9. Has a serial killer returned? "The Many Mouths of Aaron Colville" S2E19

A serial killer known for biting his victims appears to be killing again, even though he was presumed dead.
Sherlock investigates in

10. Sherlock investigates in "The Many Mouths of Aaron Colville" S2 E19

A serial killer known for biting his victims appears to be killing again, even though he was presumed dead.
Sherlock tries to catch a serial killer in

11. Sherlock tries to catch a serial killer in "The Many Mouths of Aaron Colville" S2E19

A serial killer known for biting his victims appears to be killing again, even though he was presumed dead.
Sherlock and Watson search for a killer in

12. Sherlock and Watson search for a killer in "The Many Mouths of Aaron Colville" S2E19

A serial killer known for biting his victims appears to be killing again, even though he was presumed dead.