きたの

did … come? / came?

→ 来る
phrase Very common #913
did … come? / came? A casual question form combining きた (came) with の. The subject and exact meaning depend on context; for example, 帰ってきたの asks whether someone came back.
JA: どこから、どうやってきたの?
EN: Where did you come from, and how did you get here?

どうして暗がりでキスしてきたの?

Why did you kiss me in the dark?

私に付いてきたの?

Did you follow me?

— パンズ・ラビリンス (2006)

仕事じゃなく映画を見てきたの

I went to see a movie, not to work.

— 花様年華 (2000)

クッキー焼いてきたの

I baked some cookies.

— バトル・ロワイアル (2000)

どこから、どうやってきたの?

Where did you come from, and how did you get here?

家で食べてきたの?

Did you eat at home before coming?

ケーキも作ってきたの

I made a cake too.

— コーラス (2004)