No, don't worry. This isn't one of those "mary goes off the rails" moments. I meant in my WIP. I hadn't really planned on more than one death (except the murderer who will meet a bad end) but I think I'm heading toward another dead body. My heroine has inadvertantly pissed off the killer and put herself in harm's way. I think the murderer will make an attempt on her life and kill the wrong person.
I was afraid I had made a bad move and resolved some of my conflict far too early, but I think this just might redeem it. I was losing my sense of danger to the protagonists. This should do nicely. Nothing like someone who wants to kill you to heighten the tension.
Then again, I don't want to rely on cheap plot devices to manufacture tension. Oh hey, story getting stale, time to kill someone again. It has to feel organic and necessary to the plot. I think it is. The killer has framed my protagonist for the murder. Now she's going to try and fake her suicide. Too bad she doesn't know my gal doesn't like chocolates and will hand off the poisoned present to someone else.