Book of the Damned - Diabolic caster level

[AlleRacing]

Does this book have a caster level of any kind? The other two chapters are listed as CL25, but no where seems to have the caster level of the diabolic chapter. I even picked up Princes of Darkness in hopes that it might shed some more light on what this book is capable of. My party found it, and it's been pretty great so far. I've just been using it as if it were the minimum caster level for the spells it can cast, but it's an artifact, which generally means CL20+.

Any clarification on this? I've looked and looked and can't find an answer.

[skizzerz]

The complete book is CL 25, and given you know two chapters are also CL 25, that necessitates that the unknown chapter is similarly CL 25.

Artifacts & Legends gives the statblock for the complete book, and Hell Unleashed further expands on its abilities. The Book of the Damned series details each individual chapter of the book should they be received in isolation.

[AlleRacing]

I was figuring it should be CL25, and I did pick up Book of the Damned - Princes of Darkness in hopes it could clarify, but nothing that I've found explicitly cites its caster level.

I'll run it by my group if they're cool with it being CL25. That means casting dictum with it got a hell of a lot stronger. It's why I was hesitant to use it at such a high caster level in the first place, given I was level 10 when we found it.