故事讲述玫瑰镇（Rosewood Day）镇中学的社交女王Alison失踪一年后，她的四位好友－－Spencer，Hanna，Aria和Emily。突然收到一条署名为「A」的神秘短信。「A」威胁说要揭发这四位美少女的秘密－－包括她们隐藏了很久的、只有Alison才知道的秘密。
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<听写方式: 填写缺失的部分, 不用带数字序号>
A:Hey.
A'mom:Hi.
A:Chicken-oh-my-gosh in the middle of the week?
A'mom: 　　　　　1　　　.
Are you okay with veggie burgers?
A:Actually, I said I'd have dinner at Spencer's.
A'mom:Oh. Okay.
And Mike is gonna be out too, 　　　　　2　　　.
A:That's great.
Alison:Isn't that your dad's car?
　　　　　3　　　.
A:Tell her what?
Alison:Aria, you just saw your dad making out with someone
who is not your mom.
- Y... you have to tell her.
- 　　　　　4　　　.
I don't know, okay, but you have to.
A:It's my dad.
Alison:Don't answer.
A:Well, I have to!
Alison: 　　　　　5　　　.
You can't do that to your mom.
You have to tell her, Aria,before somebody else does.
Then you'll lose both of them.
A:God.
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Yeah, I felt like making a little treat for your dad, something special. so I guess your dad and I will have the place to ourselves. You so totally have to tell her. How am I supposed to tell her that? He'll try and talk you out of telling.