YOU SAID:
Two strangers, who awaken in a room with no recollection of how they got there, soon discover they're pawns in a deadly game perpetrated by a notorious serial killer.
INTO JAPANESE
彼らがそこに着いた方法の記憶ではありませんが部屋で目を覚ます 2 つの他人はすぐに彼らを発見している悪名高いシリアル キラーが犯した致命的なゲームの駒。
That didn't even make that much sense in English.