The third installment or third book most of the time.
P.S.
A set of three books or movies is called a trilogy... just in case you wanted to know!
It's called a Trilogy.
The third book in a series. Duhhh
Trilogy
A trilogy
It is not out yet, but it will be called Sabotaged and it is coming out in July,2010.The third book in Margaret Peterson Haddix's Missing series is Sabotaged.
The 'Percy Jackson and the Olympians' series is concluded. There will be no sixth book. The next Camp Half-Blood series, entitled 'The Heroes of Olympus', does mention Percy Jackson. The first book is called 'The Lost Hero'. It is estimated to be released into bookstores in October.
Chosen is the third book in the House of Night series by P.C. and Kristin Cast.
We will find out in the One the third book in the selection series!
It's called a sequel.
The third book in the Leviathan series is called Goliath.
The third book in the series is called A FAREWELL TO CHARMS
The third book of the Dormia series is called: The Shadow Tree.
The Third book in the Ingo series is called 'The Deep'.
The third book in Alyson Noel's Immortals series is called Shadowland.
The third book in the Cryptid Hunters series is called "Tentacles."
The third book in the series is called Small Steps.
No, the third book in the series is called Spell Bound.
Chains of Reaction is the name of the third book in the Perfect Chemistry series.
It is called "Eclipse".
The Sight. The third series is called The Power of Three.
The third book in the Finishing School series by Gail Carriger is called Waistcoats & Weaponry.