Title: The Third Gate
Content:  The Third Gate is the fifth solo novel by American writer Lincoln Child. The novel was released on June 12, 2012 by Doubleday. The book is also the third installment in the Jeremy Logan series.
Title: The Gate (novel)
Content:  Though Sōseki did not identify The Gate as part of an official trilogy, scholars and critics usually consider The Gate to be the third in a trilogy of novels begun by Sanshiro (1908) and And Then (それから) (1909). All three novels deal with the themes of self-knowledge and responsibility – on the one hand, accountability to society, and on the other, responsibility to one's own emotions. However, the three novels do not share characters. According to critic Pico Iyer, The Gate is a book "about what never comes to pass." The Gate focuses on detailed description of characters and setting, leaving the reader to fill in the blanks where action is left undescribed. The action that is described is often portrayed as fruitless, or as making a bad situation worse. For example, Sosuke's trip to the Zen temple only teaches him that his efforts to seek enlightenment are unlikely to succeed.
Title: The Gate (novel)
Content:   The Gate (門) is a Japanese novel written in 1910 by Natsume Sōseki. This is the last work of the first trilogy, following "Sanshirō " and "Sorekara". It was a commercial success when published in Japan. This novel is about Sosuke, who betrays his best friend Yasui and marries his wife Yone, and how he seeks salvation from his guilt. Multiple English translations have been published, including a 1990 edition translated by Francis Mathy and a 2013 edition translated by William F. Sibley. Pico Iyer wrote the introduction for the 2013 edition, which was published by New York Review Books.
Title: The Seventh Gate
Content:  The Seventh Gate (1994) is a fantasy novel by American writers Margaret Weis and Tracy Hickman, the seventh and final book in their Death Gate Cycle series.
Title: The Third Grave
Content:  The Third Grave is a fantasy horror novel by author David Case. It was published by Arkham House in 1981 in an edition of 4,158 copies. It was Case's first book published by Arkham House.
Title: The Seventh Gate (1983 novel)
Content:  The Seventh Gate is a novel by Geraldine Harris published in 1983.
Title: The Gatekeeper (novel series)
Content:   The Gatekeeper is a trilogy of books written by Christopher Golden and Nancy Holder based on the TV series Buffy the Vampire Slayer.
Title: The Three Gates
Content:  The Three Gates (Les trois portes : The Time Runaways #01) is a novel by Philippe Ebly published in France in 1977. Looking for a shelter in a stormy night, two young trekkers, Thierry and Didier stop by a cosy inn which was supposed to be unfriendly. Thierry lies unashamedly to the owner, pretending that they have booked a room. The con works, much to the surprise of Didier. The morning after, back on the road, the two boys realized that they are no more on the map, and that the milestones have vanished. There are no more traces of civilization, but that's only at the twilight that they meet Xhenn, a very small guy. Xhenn told them that they have arrived in the land of Ganeom. They will never come back to their home, unless somebody escorts them to one of the three gates that can bring them back to the land of the men.
Title: The Gatekeeper (novel series)
Content: Litefoot1969.bravepages.com - Review of book three by Litefoot ; Teen-books.com - Reviews Book III ; Nika-summers.com - Review of book three by Nika Summers 
Title: The Lost Gate
Content:  The Lost Gate is a fantasy novel by Orson Scott Card. It is the first novel in the Mither Mages trilogy. The second novel is The Gate Thief and the third one is Gatefather.

Question: Who is the author of The Third Gate?
Answer: Lincoln Child.