Parson Tickletext writes to Parson Oliver about how impressed he is with Pamela, but Parson Oliver writes back with the shocking information that Pamela is not who she seems. Pamela is not her real name—her true name is Shamela Andrews, and she is the daughter of an unwed woman by the name of Henrietta Maria Honora Andrews. Her tale is not one that young gentlemen or servant-maids ought to emulate, and he has many original letters to prove it.
Shamela is employed by the wealthy Squire Booby. Shamela is the opposite of the naïve and fragile Pamela. Prior to her employment, she had a romantic and sexual encounter with Parson Williams (and probably had a child by him). Because of this, Shamela knows how to seduce a man and does so with the Squire. Her mother assures her that if she can seduce and wed Squire Booby she can later be with whomever she wants as long as she shows the proper discretion. Shamela concocts a plan with the help of wily servants to get Squire Booby to marry her. She seduces him in such a way by wearing figure-hugging clothes and is overtly flirtatious and coquettish so that he is persuaded to take advantage of her while she sleeps. As he sneaks into her room and puts a hand on her breast, she leans into him in her "sleep" pushing him to go further until she "wakes" begging him to not destroy her "virtue" before they are married. After several such encounters, he decides he is bewitched by her and must marry her.
Shamela is still obsessed with Parson Williams, whose family was assisted financially by the Squire many years back. He is initially suspicious of the Parson, but Shamela’s protestations that she is innocent win him over. She is thus able to carry on her affair with the parson under her husband's nose.
Parson Oliver ends his collection of documents with a postscript to Tickletext saying that the Squire found Shamela in bed with Williams and kicked her out and is trying to prosecute the parson. Tickletext is duly horrified by all of this, especially of Parson Williams’s role, and is grateful that he now knows the truth.
