Whenever the Killer is within 36 metres of your location, Spine Chill activates, lighting up its icon.
If there is a Terror Radius present, Spine Chill will reveal its intensity using its icon.
If the Killer is within range and looking at you with a clear line of sight, you benefit from the following effect:

Increases your Action speeds in Repairing, Healing, Sabotaging, Unhooking, Cleansing, Blessing, Opening, and Unlocking by 2/4/6 percent.
This effect lingers for 0.5 seconds.

When falling from great heights, you benefit from the following effects:

Reduces the Stagger duration by 75 percent.
Suppresses Grunts of Exertion from falling.
Upon landing, break into a sprint at 150 percent of your normal Running Movement speed for 3 seconds.
Balanced Landing causes the Exhausted Status Effect for 60/50/40 seconds.
Balanced Landing cannot be used when Exhausted.

Your ferocious tenacity in dire situations allow you to benefit from the following effects:

Increases your Crawling speed by 30/40/50 percent.
Grants the ability to crawl and recover at the same time.
Reduces the volume of Grunts of Pain while in the Dying State by -75 percent.

Unlocks potential in your Aura-reading ability.
Each time a Generator is completed, the Auras of any Generators, Chests, and Totems within 32/48/64 metres are revealed to you for 10 seconds.

If you are holding a Map, any objects revealed by Detectives Hunch will automatically be tracked by it.