Gregson's Daughter Comes To Watson For Help on Elementary Episode 20

1. "A Stitch In Time"

Holmes and Watson investigate the murder of a professional skeptic, a man who debunked paranormal, religious and scientific phenomenon for a living. The case becomes urgent when his homicide reveals a potential threat to homeland security. Also, Captain Gregson’s daughter and fellow NYPD officer, Hannah (Liza J.  Bennett), asks Watson for help with one of her cases
Watson helps Gregson's daughter.

2. Watson helps Gregson's daughter.

Holmes and Watson investigate the murder of a professional skeptic, a man who debunked paranormal, religious and scientific phenomenon for a living. The case becomes urgent when his homicide reveals a potential threat to homeland security. Also, Captain Gregson’s daughter and fellow NYPD officer, Hannah (Liza J.  Bennett), asks Watson for help with one of her cases
Liza J. Bennett guest stars at Gregson's daughter

3. Liza J. Bennett guest stars at Gregson's daughter

Holmes and Watson investigate the murder of a professional skeptic, a man who debunked paranormal, religious and scientific phenomenon for a living. The case becomes urgent when his homicide reveals a potential threat to homeland security. Also, Captain Gregson’s daughter and fellow NYPD officer, Hannah (Liza J.  Bennett), asks Watson for help with one of her cases
Holmes and Watson investigate the murder of a professional skeptic

4. Holmes and Watson investigate the murder of a professional skeptic

Holmes and Watson investigate the murder of a professional skeptic, a man who debunked paranormal, religious and scientific phenomenon for a living. The case becomes urgent when his homicide reveals a potential threat to homeland security. Also, Captain Gregson’s daughter and fellow NYPD officer, Hannah (Liza J.  Bennett), asks Watson for help with one of her cases
Another Experiment by Sherlock

5. Another Experiment by Sherlock

Holmes and Watson investigate the murder of a professional skeptic, a man who debunked paranormal, religious and scientific phenomenon for a living. The case becomes urgent when his homicide reveals a potential threat to homeland security. Also, Captain Gregson’s daughter and fellow NYPD officer, Hannah (Liza J.  Bennett), asks Watson for help with one of her cases
A case becomes urgent when there is a possible threat to homeland security

6. A case becomes urgent when there is a possible threat to homeland security

Holmes and Watson investigate the murder of a professional skeptic, a man who debunked paranormal, religious and scientific phenomenon for a living. The case becomes urgent when his homicide reveals a potential threat to homeland security. Also, Captain Gregson’s daughter and fellow NYPD officer, Hannah (Liza J.  Bennett), asks Watson for help with one of her cases
The latest killer could also be a terrorist

7. The latest killer could also be a terrorist

Holmes and Watson investigate the murder of a professional skeptic, a man who debunked paranormal, religious and scientific phenomenon for a living. The case becomes urgent when his homicide reveals a potential threat to homeland security. Also, Captain Gregson’s daughter and fellow NYPD officer, Hannah (Liza J.  Bennett), asks Watson for help with one of her cases