Plot:In New York City in 1991 the young girl Ally witnesses the murder of her mother on a New York City Subway platform

In 2001, Ally (Emilie De Ravin) is 21 years old,and is a student at New York University who lives at home with her father, an NYPD detective, Neil Craig (Chris Cooper). We discover that he is very protective of Ally, insisting that he knows where she is, that he drives her to and from school and that she takes taxis instead of the subway.

We are next introduced to Tyler Hawkins (Robert Pattinson), a moody, directionless 21 year-old auditing classes and working in a bookstore...

I always needed time on my own
I never thought I'd
Need you there when I cried
And the days feel like years when I'm alone
And the bed where you lie
Is made up on your side

When you walk away
I count the steps that you take
Do you see how much I need you right now?

[Chorus]
When you're gone
The pieces of my heart are missin' you
When you're gone
The face I came to know is missin', too
When you're gone
The words I need to hear
To always get me through the day
And make it okay
"I miss you"

I've never felt this way before
Everything that I do
Reminds me of you
And the clothes you left - they lie on the floor
And they...