1:
1. Danny Reagan is not really dead but in witness protection.
2. Erin Reagan is secretly working for the FBI.
2:
3. Jamie Reagan's wife Eddie is pregnant with twins.
4. The Commissioner's daughter is actually working for the Russian mob.
3:
5. Linda Reagan's death was faked to protect her from danger.
6. Danny Reagan has a long lost twin who is seeking revenge.
4:
7. Henry Reagan is actually a retired spy.
8. Frank Reagan is being blackmailed by a corrupt politician.
5:
9. Eddie Janko is an undercover agent investigating the Reagan family.
10. Mayor Chase has a secret connection to the Reagan family.
6:
11. Joe Reagan's death was faked and he will return in Season 15.
12. The entire Reagan family is part of a secret society.
7:
13. Nicky Reagan is actually Frank's biological daughter.
14. A mysterious figure from Jamie Reagan's past returns to seek revenge.
8:
15. The Reagan family is descended from a long line of crime fighters.
16. Erin Reagan's ex-husband is actually a criminal mastermind.
9:
17. The Blue Bloods Season 14 Finale will reveal a shocking family secret.
18. The Reagan family will face their biggest challenge yet in Season 15.