バレンタインの翌朝、アパートでカップルの残骸が見つかる。検死の結果、お互いを食べ合って死亡したらしい。他にもカップルの不可解な自殺が起きていた。調査に乗り出したサムとディーンは、カップルの心臓に印された天使のマークを発見。カスティエルを呼び出すとキューピッドが付けたマークだと言う。キューピッドが暴走して、結び付けたカップルを殺していると推理した３人はキューピッドを捕まえて尋問するが……。
脚本： ベン・エドランド
監督： マイク・ロール
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