Mona-Mania

Mona-Mania! is the 15th episode of Season 3 of Pretty Little Liars. It aired on Tuesday, January 15, 2013.

Synopsis
After the shocking events at the school marathon, Aria, Emily, and Spencer are sure now more than ever that Mona is up to her old tricks. However, Hanna isn't on the list of Mona's. That's because she's holding out for her former friend and therefore isn't so sure she's still evil. As for Mona, she's seemingly popping up everywhere, which makes it looks like she has a plan. But with no real evidence to prove Mona is back to her evil ways, how can the Liars prove what they believe to be true? Meanwhile, Aria’s fears about her father grow stronger when something vital that is hidden in her room goes missing and we are going to know who was in the basement as A supposingly

Title

 * The title is most definitely a reference to Mona Vanderwaal.
 * May reference the disease monomania, a form of partial insanity conceived as single pathological preoccupation in an otherwise sound mind.

Main Cast

 * Troian Bellisario as Spencer Hastings
 * Ashley Benson as Hanna Marin
 * Lucy Hale as Aria Montgomery
 * Shay Mitchell as Emily Fields
 * Sasha Pieterse as Alison DiLaurentis

Supporting Cast

 * Janel Parrish as Mona Vanderwaal
 * Chad Lowe as Byron Montgomery
 * Brandon W. Jones as Andrew Campbell
 * Ian Harding as Ezra Fitz
 * Keegan Allen as Toby Cavanaugh
 * Holly Marie Combs as Ella Montgomery
 * Annabeth Gish as Anne Sullivan
 * Aeriel Miranda as Shana
 * Julian Morris as Wren Kingston
 * Brendan Robinson as Lucas Gottesman
 * Amanda Schull as Meredith Sorenson
 * Lindsey Shaw as Paige McCullers

Promo + Sneak Peek
Pretty Little Liars 3x15 Promo "Mona-Mania!" (HD)|Promo Pretty Little Liars 3x15 Sneak Peek "Mona-Mania!" (HD)|Webclip #1 Pretty Little Liars 3x15 Sneak Peek 2 "Mona-Mania!" (HD)|Webclip #2 Pretty Little Liars 3x15 Sneak Peek 3 "Mona-Mania!" (HD)|Webclip #3