P, a superintendent, offered a reward for information leading to the capture of X. G, a policeman, offered the info to a 3rd party to relay it to P before he knew of the reward. G knew of the reward by the time the information was relayed to P. The court held that he was entitled to the reward. This suggests that acceptance of an offer can occur, even if one is unaware of the offer. The general rule is that knowledge of an offer is required before it can be accepted but an exception was made in this case because the offer was of a unilateral contract .