### Clue: Mystic took the waters by head of the Indus (5)
### Answer: SWAMI 
 ### Explanation: Definition: Mystic
  SWAM(*taking the waters* means to go to a spa, to bath, drink, etc. for one's health, I suppose you could also swim in it) + I(initial letter,*head* of *Indus*)
Defn:  An honorific title given to a Hindu religious teacher.  Nice surface as you'll find water and swamis at the Indus River.