All these successive accidents were perhaps the result of chance; but they might be the fruits of a plot.

Athos and d'Artagnan went out, while Planchet was sent to inquire if there were not three horses for sale in the neighborhood.

At the door stood two horses, fresh, strong, and fully equipped.

These would just have suited them.

He asked where their masters were, and was informed that they had passed the night in the inn, and were then settling their bill with the host.
Athos went down to pay the reckoning, while d'Artagnan and Planchet stood at the street door.