CLOCKWORD
The solutions from 1 to 12 are all six-letter words ending with the letter N in the centre. Moving clockwise from 1, the letters in the other circle will spell out the name of a Prohibitionera gangster.
1. Fruit 2. Unpick a hem 3. Inn 4. Cave 5. Occur 6. Apelike 7. Selected 8. Tomboy 9. Rough 10. Hearken 11. Soup bowl 12. Hard mineral