Short for マーダーミステリー.

love (in both senses of loving a friend or family member and a partner romantically) / very (most) favorite

every week; weekly

play, amuse oneself, enjoy oneself / spend one's time idle, do nothing / for an item not to be in use, be spare or idle

friend

together, with

combination; a state which is combined / meeting

combined, merged, unified

(colloquial) a girlfriend (a female partner in a romantic relationship)

(literary) they (about women or girls)