There are 3 books in the Penguin Ink series. The newest book is The Believers which came out in 2009.

1
Everything You Know

Everything You Know
Willy Muller is an embittered writer of celebrity bios and an equal-opportunity misanthropist. At the age of fifty, he has survived imprisonment for murdering his wife, years of venomous hate mail from the British public and, most recently, the suicide of his daughter Sadie. Willy needs a rest, but he's…
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3
The Believers

Book cover of The Believers

Zoe Heller's darkly comic third novel, The Believers explores a family pushed to its limits.

When Audrey makes a devastating discovery about her husband, New York radial lawyer Joel Litvinoff, she is forced to re-examine everything she thought she knew about their forty-year marriage. Joel's children will soon have to…