### Clue: Sitting by river, I'm about to tuck into fruit – this may bring death! (4,6)
### Answer: GRIM REAPER 
 ### Explanation: Definition: this may bring death
 R(abbrev. for "river") **placed after**(Sitting by …, in an across clue) [ I'M + RE(with reference to;about) **contained in**(to tuck into) GRAPE(a fruit) ].
Defn: The personification of death.