During a five-month break in Toronto, Sarah has fallen for Aaron Stevens. When the police seek her help to find a serial killer who has operated in the Toronto area for more than twelve years, Sarah receives a series of messages from her dead sister, Vivian.

As she closes in the on The Leap Year Killer, Sarah runs into a street gang bent on revenge for her shooting one of their members. Aaron won't accept that she willingly puts herself at risk doing her sister's bidding. Sarah wonders whether the messages are truly from Vivian, or if she possesses a unique psychic ability.

With all that she has seen of man's darkest nature, it makes her question why she hasn't given up on humanity yet.