### Clue: Rivals playwright forger for 1 across player (8,5)
### Answer: SHERIDAN SMITH 
 ### Explanation: Definition: 1 across player
 SHERIDAN(R.B., playwright who wrote "The Rivals") + SMITH(short for a blacksmith who forges iron implements).
Defn: Actress who played the role of Cilla Black in the television mini-series "Cilla".