Here's how to find the hidden house key in Hawke's Bay for Hitman 2.
Hitman 2 - Hawke's Bay DLC Trophy Guide •
Hitman 2 Hidden House Key: Where to Find the Under the Mat Key in
HITMAN™ 2 - Under The Mat ( Hidden House Key) Discovery ..
Hitman 2 Hidden House Key Location - GameRevolution
Steam Community :: Guide :: HITMAN 2, Haven Island
Hitman 2: Preparations for arrival of the target - Nightcall
Steam Community :: Guide :: ◈ HITMAN™ 2
Steam Community :: Guide :: HITMAN 2
Hitman 2: 100% Challenges Guide (Nightcall) – GameSkinny
All Dartmoor key locations in Hitman 3