Scott Speedmanis joining theYoufamily.

EW spoke with Speedman about joining the series and what to expect from Matthew.

ENTERTAINMENT WEEKLY: What was your introduction to the show?

YOU

Scott Speedman in ‘You.'.JOHN P. FLEENOR/NETFLIX

SCOTT SPEEDMAN:I didn’t know about the book, but my girlfriend was obsessed with the show.

I’d walk upstairs and she was always watching it.

And I would always be like, kind of looking over her shoulder.

That was exciting to me.

Then I got the offer not too long after that and read it and was really excited about it.

It was a cool character, so I was into it.

Joe’s trying his hand at a new life.

He’s in suburbia, yeah.

That’s what’s interesting to me, for him, anyway.

How was Matthew described to you?

He was described as sort of a typical guy.

I was interested through that point of view.

I was like, “Well, how far will they let me take this?”

How much of his journey did you know going into this?

Or did you find out as it went along?

I knew some stuff but not a ton.

That was enough for me to jump off the cliff with him and sort of get going with it.

You mentioned maybe he’s more like your father’s generation.

Did you have any inspiration for this character?

It was tech entrepreneur.

I mean, I have trouble turning on my iPhone, so that was a stretch.

[Laughs] Yeah, all that stuff was a bit of a stretch.

When you read something it’s sort of this instinctual thing: Can I do this?

Is this landing with me or not?

And this definitely did.

That’s all I need to know.

Do you enjoy playing the mysterious, darker kind of guy versus the more standard good guy?

When it’s a flawed man, deeply flawed, interesting man, that’s more fun for me.

Youseason 3 hits Netflix Oct. 15.