### Clue: Released particulars about penning book on the Queen (9)
### Answer: LIBERATED 
 ### Explanation: Definition: Released
 **Reversal of**(about) DETAIL(particulars;the nitty gritty) **containing**(penning) [ B(abbrev. for "book") **placed above**(on, in a down clue) ER(abbrev. for Elizabeth Regina;the Queen) ].