Plot summary
After Ashley Marin is denied bail, Hanna seeks Mona's help in plotting her biggest lie ever: a false confession to murdering Detective Wilden. Aria learns that Mike is taking martial arts classes from Jake, as he is afraid of his teammates. Spencer finds a statement from Eddie Lamb regarding Mrs Cavanaugh's alleged suicide. She discovers discrepancies between his statement and Wilden's official report, suggesting that Wilden was paid to alter the facts. Veronica later receives a call saying Mona Vanderwaal has confessed to killing Detective Wilden. ' A' ending: 'A' is seen drilling holes in the floor of the DiLaurentis house.
Credits
Adapted from Wikipedia contributors, Pretty Little Liars season 4. HTML formatting and reference markers removed.