If you added a Delete Crime action item earlier, this challenge builds off of that by adding the ability to delete crimes from your database by calling a deleteCrime(Crime) method on CrimeLab, which will call mDatabase.delete(…) to finish the job.

And if you do not have a Delete Crime? Well, go ahead and add it! Add an action item to CrimeFragment’s toolbar that calls CrimeLab.deleteCrime(Crime) and finish()es its Activity.