Summoned (Redemption's Heir #1)

When the Elder Gods extend an invitation, be wary of the strings attached While browsing in a rare book store in Arkham, Sean finds an occult book with an ad seeking an apprentice sorcerer, from a newspaper dated March 21, 1895. Even more intriguing, the ad specifically requests applicants reply by email. Sean’s always been interested in magic, particularly the Lovecraftian dark mythology. Against his best friend Edna's ("call-me-Eddy-or-else") advice, he decides to answer the ad, figuring it’s a clever hoax, but hoping that it won’t be. The advertiser, Reverend Redemption Orne, claims to be a master of the occult born more than 300 years ago. To prove his legitimacy, Orne gives Sean instructions to summon a harmless but useful familiar—but Sean’s ceremony takes a dark turn, and he instead accidentally beckons a bloodthirsty servant to the Cthulhu Mythos god Nyarlathotep. The ritual is preemptively broken, and now Sean must find and bind the servitor, before it grows too strong to contain. But strange things are already happening in the town of Arkham....