| Trvia Question | Trivia answer |
| How many Episodes is Becketts Mother's murder mentioned? | |
| How many Sunflowers were there in the murder of Flowers for your grave episode 1 season 1? | |
| What floor was the Nanny's family living on in Nanny Mcdead season1 episode 2? | |
| How many doctors where in the 'galaxy of Greg' in episode 5 season 3 'Anatomy of Murder'? | |
| How many times is Castle's phone broken? | |
| How old was Mathew 'Crow' Freeman when he witnessed his mother's murder in season 2 episode 6 vampire weekend? | |
| What was the number in the name of the resturant in food to die for season 2 episode 22? | |
| What time did the muder start in overkill episode 23 season 2? | |
| What is the number written on one of the victims hands in episode 1 season 3 A deadly affair? | |