Lucas is a friend of Hanna's. The two originally meet in V Club, and started hanging out afterwards, much to the chagrin of Hanna's best friend, Mona. Lucas, a nerd, is hopelessly in love with Hanna, who doesn't return his feelings. When Caleb leaves town, Lucas convinces him to come back, and even lets Caleb stay at his house. The night of the masquerade ball, the girls see Lucas talking with Jenna and the Black Swan (who's later revealed to be Melissa), and after that night, he starts acting strange, from lighting papers on fire to snapping at his boss, Laurel.
Alison wasn't involved in a RELATIONSHIP with Ali, because Ali bullied Lucas. Lucas is not a part of Ali's killing.
Read the books
When Alison died
Yes, he is.
That is all part of the mystery. We don't know, it probably has to do with something the liars have done to A in the past.
Nope, he's innocent.
Most likely because it's a major part for Emily
No, season 2 premiers on June 14th
Beacuse she was part of the whole -A thing but i dont wanna say 2 much
no because she is only acting for a her part
It's part of a time capsule flag that the girls wanted for a scavenger hunt.
yes toby was just revealeed in the last episode as part of the "A" team