'Roses are red, the game's just begun. Are you ready for some Valentine's fun? Keep your eyes peeled for V clue number one. Love V x'

After being made redundant from teaching, Frances starts the frantic job search and ends up as a Christmas temp stacking shelves in her local supermarket.

Soon Advent calendars change to chocolate hearts as talk and stock focuses on Valentine's Day, and despite Frances not receiving a card, she is more than delighted for her new friend Mia who receives an unexpected bunch of roses and a cryptic clue from V.

But this all changes when romantic flowers soon turns to sinister messages and murder. Frances plans on uncovering the unknown Valentine and is grateful when a little help comes along in the form of some old pals from the M.I.T.

However, as the threatening continues and murder strikes again, Mia becomes more distressed - especially when she is told the next target is her.

Will Frances be able to solve this case in time, or will the mysterious Valentine manage to commit all their murderous crimes?