This book consists of articles from Wikia or other free sources online. Pages: 98. Chapters: "James Leland," A, A, Alison DiLaurentis, Alison DiLaurentis, Anne Sullivan, Aria Montgomery, Aria Montgomery, Ashley Marin, Bridget Wu, Byron Montgomery, Characters, Chloe Roland, Courtney DiLaurentis, Darren Wilden, Darren Wilden, Emily Fields, Emily Fields, Ezra Fitz, Ezra Fitz, Garrett Reynolds, Hanna Marin, Hanna Marin, Ian Thomas, Ian Thomas, Isaac Colbert, Janet, Jason DiLaurentis, Jenna Cavanaugh, Jenna Marshall, Jessica DiLaurentis, Kate Randall, Klaudia Huusko, Logan Reed, Lucas Beattie, Lucas Gottesman, Maya St. Germain, Melissa Hastings, Meredith Gates, Mike Montgomery, Mona Vanderwaal, Mona Vanderwaal, Nicholas Pennythistle, Paige McCullers, Pam Fields, Peter Hastings, Spencer Hastings, Spencer Hastings, Toby Cavanaugh, Toby Cavanaugh, Veronica Hastings, Wren Kim, Wren Kim, Zach Pennythistle. Excerpt: "A" is an anonymous character who sends anonymous messages to Spencer, Emily, Hanna and Aria. The messages were all signed with the letter "A" (with only a few exceptions when intended for other eyes), and the fact that the texts contained secrets only Alison would know made the girls think that it was Alison sending the texts. Only when Alison's body was discovered did they realize that it was someone else. He/She makes appearances as a figure with black leather gloves, a hooded black sweatshirt, and dark pants. "A" sends threatening anonymous texts to the girls and others, containing incriminating things and secrets that only Alison would know. At first, the main suspect of the sender is Alison, but when her body is discovered, suspicions run elsewhere. Throughout the seasons, the story focuses on the mystery of "A." "A's" messages start in "Pilot," when "A" lets each of the girls know that she knows their individual secrets, in addition to their communal secret, "The Jenna Thing." In "To Kill a Mocking Girl," "A" is seen listening to ...