Check out the brand new Private Investigators Casebook!
I designed this casebook to be one case per book. This is the type of book I take with me when I am doing surveillance work, one case, one book. This way if you are called into court, you can use this one casebook to turn in and not worry about having notes from other cases being read by another person/lawyer.
Easy to use, allows you to track days, case, your license information and more.