Today's birthdays:
| Alan Rickman born | 21 February 1946 |
Today's anniversaries:
| Dr. Moore Agar starring Rathbone | 21 February 1944 |
| The Adventure of the Hangman and the Book starring Stanley | 21 February 1949 |
| The Case of the Vanished Detective starring Howard | 21 February 1955 |
| The Disappearance of Lady Frances Carfax starring Brett | 21 February 1991 |
| The Man with the Twisted Lip starring Gray-Stanford | 21 February 2000 |
| Two Stories starring Laurie | 21 February 2011 |
| Possibility Two starring Miller | 21 February 2013 |