Painkiller - N. J. Fountain

I CANNOT GO ON LIKE THIS... I FEEL SUCH A BURDEN TO YOU. YOU ARE YOUNG AND CAN START AGAIN. YOU DESERVE THAT CHANCE. BY THE TIME YOU READ THIS I WILL BE DEAD. DO NOT GRIEVE FOR ME, FOR I AM NOW WITHOUT PAIN... Monica Wood has been living with chronic pain since an accident five years ago; her days are passed in a haze of pain and memory loss due to her medication. Monica's husband Dominic is her carer, but he must go out to work since she no longer can. On one of her good days she finds a suicide note; a note she doesn't remember writing - and she begins to question everything. Who DID write the note? And if someone tried to kill her once, what's to say they won't try again?