ITV称第三季将于2017年2月27日（英国时间）回归，且会有一些新角色加入，并且第三季将是最终季。 第三季中Hardy警长和Miller警长再次联手，而Danny之死似乎永远也无法划下句号。作为最终季，第三季将关注于这一事件给涉及到的每个人带来的情感伤害，以及对友谊、亲情不可挽回的损伤。
Photon solar energy group is aiming to build a solar farm in Danebury. Blissfully unaware of the plan Andy and Lance are still looking for buried treasure - construction worker Andy, with Becky and their baby living with disapproving mother-in-law Veronica whilst Lance is sharing his flat with his messy, noisy teen-aged daughter Kate. The group is shocked to read of Photon's intention in the local paper - but then Andy makes a potentially interesting discovery.