Answer: afoot

AnswerCrossword Clue
AFOOTLike Sherlock Holmes' game?
AFOOTUnderway, as a game
afootin progress
afooton foot
afooton foot
AFOOTLike Holmes's game
AFOOT"The game is ..." (Sherlock Holmes)
AFOOT"The game is ..." (Holmes)
AFOOT"The game is ..." (Holmes quote)
AFOOT"The game is ....!"
AFOOTUnder way, as a game
AFOOTWhat the game is, to Sherlock
AFOOTOn the horizon
AFOOT"The game is ..." (in progress)
AFOOT"The game's ..." (Sherlock Holmes)
AFOOTIn the offing
AFOOT"The game is ...!" (Sherlock Holmes line)
AFOOTNot on horseback
AFOOTLike the game, to Holmes
AFOOTIn preparation.
AFOOTIn action
AFOOTUnder way.
AFOOTStirring.
AFOOTOn shank's mare.
AFOOTBrewing.
AFOOTIn motion.
AFOOTOn the move.
AFOOTIn the offing.
AFOOTNot riding.
AFOOT"Come Watson, the game is ..."
AFOOTIn progress, to Holmes
AFOOTOn shank's mare
AFOOTIn the wind
AFOOTStirring
AFOOTVia shank's mare
AFOOT"...Watson, come! The game is ..."
AFOOTLike the game, to Sherlock
AFOOT"The game is ...": Holmes
AFOOTJust begun
AFOOTIn operation