What was Toby's secret in Pretty Little Liars?

Answer 1

Toby Cavanaugh secret was that he touched his step sister, Jenna, inappropriately, and Jenna had told Alison. Alison and Jenna then made the plan that they were going to stop Toby from ever doing it again. Alison then made the girls all set the firework off into Toby's treehouse; but Ali was unaware that Jenna was in there with him.. and the firework blinded Jenna. Toby saw Alison set the firework off and proceded to threaten that he would tell what she did, but she replyed with that she knew his secret as well, and she promised that if Toby kept her secret that she would keep his.

Answer 2

Toby had a sexual relationship with his step sister Jenna. Ali saw them and was going to tell but then Toby commited suicide :(

Toby molested Jenna... one night Ali was trying to scare Toby by shooting a firework at the tree house he was in. Ali is trying to set off the firework and then she sees jenna being molested by toby. Ali shot the firework and accidentally hit Jenna which made her blind. Ali and Toby both saw each other and Toby said he was going to tell but Ali said if you tell ill tell. Toby didnt commit suicide for a couple of years after ali went missing

Answer 3

Ali's secret was that she had a crazy twin sister named Courtney.
Ali had no secret's it was her twin sister Courtney that did. Courtney was pretending to be Alison. They thought Alison was Courtney so they sent her to the metal institution that courtney was meant to go to.

Answer 4

Toby did nothing he didn't kill Alison they say it is the policeman

Answer 5

He was inapropriately touching his stepsister Jenna.

Answer 6

He is hiding that he use to do it with his sister Jenna.

Answer 7

Toby knows that ali blinded jenna