2. Luke's mom will be introduced

3. Percy will live (Rick's Blog)

4. Takes place when Percy is 16 (Texas Monthly Talks)

5. Thalia, Nico, Grover, Tyson, Percy, Annabeth, and the rest of the gang will have parts in the book (Myth and Mysteries from Treeckorules)

Facts from Mr. Riordan's Twitter:
1. Thalia and Clarisse's last name will be revealed.

2. One of Percy's monster enemies from The Lightning Thief reappears, and the battle is on!

3. Ever wonder why the Oracle is a mummy in the attic? You'll discover her secret in book five.

4. Typhon stirs in book four. What could he be like in book 5?

5. Percy visits his father's undersea kingdom for the first time, but he's in for a shock.

6. Hi from Oak Ridge, TN! Did you know they built the first atom bomb here in a secret city? I think Percy needs to fight a monster here . . .

7. The Hunters of Artemis will be back.

8. Tyson plays an important part in book five, and he's got a new battle cry. Stay tuned to find out what.

9. Grover is back in book five, but where is he? Our favorite satyr seems to have mysteriously disappeared. What can that mean?

10. Shout out to my friends in Westport, Connecticut. Your town is an important setting in The Last Olympian.

11. Rachel and Annabeth both play important roles in the final battle. Does Percy get together with one of them? Wait and see!

12. Ever wonder why Annabeth uses a knife and not a sword? You'll find out in Last Olympian. Can you guess who gave her that knife?

13. You will find out Nico's plan to defeat Luke in book five. The question is: Will this plan cost Percy his life?

14. In book 4, Poseidon gave Percy a sand dollar for his birthday. You'll find out how he "spends it" in book five.

15. Who was Nico's mom and how did Nico end up in the Lotus Hotel? You'll find out on 5/5, and the answer will surprise even Nico!

Speculations:
Have any thoughts on what might be in the fifth book? Send your thoughts using the contact form on our Contact Us page or email me at deasy @ percyquest.com. Be sure to include your name! Also, if you can explain the reason why that speculation was made, it would be wonderful to have your insights.

1. A new God/Goddess will be introduced, such as Demeter.
--> The daughter of Demeter is Persephone, the wife of Hades. Perhaps both Demeter and Persephone will have a role in helping getting rid of Kronos, since Persephone has access to the Underworld.

2. Percy and Annabeth gets together
--> This one seems quite obvious because it's been built up throughout the last four books.

3. Nico will be the Chosen One
--> This would be a great surprise to the PJO series since we think and hope that Percy is the chosen one - the reason the series was written. But having Nico as the chosen one makes a big difference as to what the gameplan for getting rid of Kronos will be.

4. A Scythe is Involved
--> Nico's plan involves the scythe of Kronos (which can server soul from body) and using it to try and expel kronos from Luke's body.
(Theory by Shane)

5. Bianca's spirit will play a role.
--> With Tartarus being in Hade's territory, Bianca has easy access to the area. She might be able to do something to help expel Kronos.

6. Thalia and the hunters will make a reappearance.
(Theory by Seher Raza)

7. Percy or Annabeth will end up admitting their feelings in a life or death situation
(Theory by Seher Raza)

8. Annabeth may be very succesful with her work on Deadalus' laptop
(Theory by Seher Raza)

9. Grover will have new powers
--> Because a part of Pan is within him.
(Theory by Seher Raza)

10. Calypso will be mentioned in Percy's thoughts
(Theory by Seher Raza)

11. Percy will learn how to summon earthquakes and tidal waves, and will have a better control over his powers.
(Theory by Seher Raza)

12. Chiron May Die.
(Theory by Seher Raza)

13. Percy's Blade will Fail
--> Since Percy's blade will fail him when he needs it most because of Ares' curse, he might have to stab Luke/Kronos with the minotaur horn OR get Luke to touch the blade of the Backbiter (most probably without meaning to), as the blade severes soul from the body.
(Theory by StarFaceMoon)

14. Thalia Might Lose Her Hunter Abilities
--> If Luke is turned good again, Thalia will fall in love with him and lose her Hunter abilities.
(Theory by Mahleah )

15. There might be a black cat
-->(Theory by InsertNameHere)

16. Rachel will play a big role
-->(Theory by InsertNameHere)

17. One of the Stoll bros will die (or both)
-->(Theory by InsertNameHere)

18. Percy will replace Riptide with a new sword.
-->(Theory by InsertNameHere)

19. Annabeth will decide to kill Luke.
-->(Theory by InsertNameHere)

20. Annabeth might have a choice between her mother and Percy.
-->(Theory by InsertNameHere)

21. An awesome, totally radical charater might be introduced.
-->(Theory by InsertNameHere)

22. New monsters will be in it like a griffin or someting.
-->(Theory by InsertNameHere)

23. Clarisse might die.
-->(Theory by InsertNameHere)

24. Kronos will inhabit someone else's body.
-->(Theory by Isaac G.R.S.)

25. Silena Beauregard will get together with Beckendorf.
--> Sparks between the two demigods were seen in "The Bronze Dragon" short story.
(Theory by P. Hazel R.S.)

26. Percy will have to do the last two labours of Hercules.
-->(Theory by Jenny)

27. Those we haven't encountered may show up:
--> Ouranus (Kronos' dad), Rhea (Kronos' wife), Zephrus (god of the west wind), and Pegasus.
(Theory by HBC)

28. Annabeth will have to choose between Luke and Percy
--> She has shown a liking to both of them. Plus, Hera did say she would have to make a choice soon. It fits.
(Theory by Abby)

29. Rachel and Nico will become a couple
--> (Theory by Nathan)

30. The Titans will Win
--> In the books it has been saying that with each day the Titans are becoming stronger, plus Kronus has a body now and Typhoon is stirring.
(Theory by Zack)

31. A new ancient god or goddess will be introduced, like Gaia and Oranus.
--> It would be interesting because Gaia and Oranus are Kronus's parents.
(Theory by Zack)

32. Percy will have to choose between Rachel and Annabeth
--> He will probably lean to Rachel
(Theory by Bells)

33. Percy's decision regarding his love interest will be crucial in defeating Kronos
--> (Theory by Nathan)

34. Juniper will die and Grover will fall in love with Rachel and she will help him.
--> (Theory by I Lady)

35. Percy could have a son which would begin a new series
--> (Theory by Infinate Darkness)

36. Tyson will sacrifice himself for Percy in a Sphinx battle.
--> (Theory by Infinate Darkness)

37. Ethan, son of Nemesis, will play a major role in the plot
--> (Theory by Chloe Phoenix)

38. Luke will NOT die, but be saved from Kron's Possession of him.
--> (Theory by Chloe Phoenix)

39. Thalia will quit the Hunters to be with Luke when/if he gets saved.
--> (Theory by Chloe Phoenix)

40. Bianca diAngelo will show up for the last time.
--> (Theory by Chloe Phoenix)

41. Luke's body was prepared by having in bathe in the Styx, like Achilles.
--> In Battle of the Labyrinth, Kronos said to Luke that he's beyond harm, and UK excerpt had Kronos say to Percy that he had to pressure Luke to get him to visit the Styx.
(Theory by Farhan)