Planted agent (4)
I believe the answer is:
mole
(Other definitions for mole that I've seen before include "Small congenital skin spot" , ""Gentleman in black velvet''" , "Spy, skin spot and furry animal" , "sauce" , "Small spot - small mammal" .)
I believe the answer is:
mole
(Other definitions for mole that I've seen before include "Small congenital skin spot" , ""Gentleman in black velvet''" , "Spy, skin spot and furry animal" , "sauce" , "Small spot - small mammal" .)