The hand is angular but quite legible. It simply reads,
Prewett,
Carstone is back and has confirmed, with certainty, that Evan Rosier is the wizard you're looking for. He bumped Carstone and then roughed up Tom Jones - Carstone suspects Rosier might be responsible for Jones' memory loss too. If you have any questions about it, contact me.
Also, Maraloffski is back from the dead as well, I guess you've probably heard. There is no concrete evidence linking him to Rosier, though be careful - Black said Maraloffski knew a wand when he saw one.
If you need any other help, I'm not hard to find.
- S.S.