What do liars do after they die? Physically and Biologically... well, nothing. They'll just be dead. They're just not relevant anymore.
Spiritually though, it depends on what your religion is. Someone who believes in God would tell you that they would be judged. Really though, there's no definitive knowledge as to what happens to someone after someone dies aside from the tangible aspects.
No, Spencer from Pretty Little Liars does not die.
Ezra did not die on Pretty Little Liars.
No, Kate doesn't die in Pretty Little Liars
None of the liars are dead.
None of the Liars are going to.
No, Allison does not die in Pretty Little Liars. She fakes her death in the show, but is revealed to be alive later on.
no she does not
None of them die
no Alyson was the one that died on pretty little liars
yes she does
No
No