The Last Witness — K.J. Parker

When you need a memory to be wiped, call me.

Transferring unwanted memories to my own mind is the only form of magic I've ever mastered. But now, I'm holding so many memories I'm not always sure which ones are actually mine, any more.

Some of them are sensitive; all of them are private. And there are those who are willing to kill to access the secrets I'm trying to bury...