Who is correct, lawbook or cop?

[Mark Hu]

I recently read a landlord law book which stressed, although landlord should stay out of domestic/roommates disputes, that if a tenant's life or health was in serious danger from violent/spouse or roommate, landlord might be liable if they do nothing.

The book recommended landlords learn how to get a restraining order so they can advise a potential victim to get such an order how to do it.

But a cop at a local police station told me that was a bunch of baloney and my best bet was to keep entirely out of such situations, and not even give advice.

Who is correct here?