### Clue: Dash of tea has to fill valley-dweller in 4's 8 (5,2,1,8)
### Answer: DEATH OF A SALESMAN 
 ### Explanation: Definition: 4's 8
 **Anagram of**(Dash) OF TEA HAS **contained in**(to fill) DALESMAN(one who presumably dwells in a dale;a valley).
Defn: A play;work(answer to 8 down) by Arthur Miller(answer to 4 down).