Ghosts of the Resistance

I've given the ghosts everything. Now they're coming for my powers.

All my life, I've talked to ghosts, helped them fulfil their last wishes, and made friends with them. I thought I had a good grip on the afterlife. Boy, was I wrong. There are things afoot in the beyond that make my nightmares have nightmares.
After wiping a powerful ghost from existence, his followers are out for blood. My blood. As if that weren't bad enough, my allies cannot be trusted. Down in the catacombs, the Knight of...