When a psychic accountant with gypsy roots, plagued by crippling secrets and the dead, is blackmailed to fix an accounting problem connected to Nazi’s it turns accounting into crusading.

Agreed with Richiev.

I'll add that as a whole this logline is very hard to understand. Best you remove anything that doesn't directly relate to the plot; gypsy roots, psychic, crippling secrets, the dead.
What event motivated the MC aside from been given a job? Him working is not out of the ordinary and lacks a personal connection.

Being a psychic accountant sounds like it is the hook of the story

But then the lead is given a job that seems to need, just normal accounting.

If this is the case then being a psychic isn't relevant to the story and should be dropped from the logline

or if being a psychic is important, you should tell us 'in the logline' why her being a?psychic is needed for the lead to accomplish?her goal.