If they didn't release the manner of murder (maybe) because the perpetrator would murder someone else differently, then why did they release the sketch? (That just makes me think the sketch is incorrect)
If they know the manner of murder then why haven't they looked into other cases where the manner of murder is similar, if not the exact same?
Police have said they have 'additional evidence', but they didn't release it (I'm not sure if they released it already) because they didn't want to "compromise any future trial". What does this "compromise any future trial" mean?
This is JMO.