Learn what Liam Hurtley is hiding | The Fate of Black Peter SH: Crimes and Punishments Guide

Approach the Analysis table (to the left of the window). Select: Recover Hurtley's letter.

In order to do that, prepare a chemical agent by mixing the chemicals in a flask in the following order: Blue, Green, Blue, Orange, Colourless, Orange, Colourless (according to the rules shown on the paper - Orange always has to be third after Blue and Colourless goes right after Orange; all the reagents have to be used). Wipe Liam Hurtley's letter content with a cloth soaked in the chemical agent that you've just made. An Evidence will appear in the Casebook: Hurtley's letter

Head to Woodman's Lee and try to match Hurtley's boots to the footprints in the garden.

Deduction

Connect "Hurtley's footprints" with "No gardener". You will obtain "Unexplained presence".

Go to Scotland Yard and interrogate Hurtley once again. In the QTE, select: Hurtley's boots match (also an Evidence in the Casebook). Then, select: Gardener and Hurtley's letter. An Evidence will appear in the Casebook: Something hidden.

Return to Woodman's Lee and talk to Mrs. Carey about Liam Hurtley and the garden tools. Sherlock will receive a bunch of Small keys that open the shed.

Open the door of the shed (behind Mrs. Carey) and go inside. Activate Holmes's talent and examine the Wooden floor (on the right). Open the Ill-fitting plank and Take the Small wooden box.

Opening the Small wooden box

A puzzle will appear, in which you have to rotate the parts of the lock in such way, so that the lines would connect.

Switch (1 click) to number 2 and turn it upwards to make the small window visible and connect the lines in it with the lines on the part number 1.

Switch (1 click) to number 3 and rotate it to match the lines with the ones on number 1.

Take a Bunch of letters from the box. Read Judith Carey's letter content (2 pages). Talk to Mrs. Carey about that. Select: Romantic Correspondence in the QTE (also an Evidence in the Casebook).

Deduction

Connect "Judith Carey's confession" with "Liam Hurtley's letter". You will obtain "Harmless flirting".

Connect "Judith Carey's confession" with "Judith Carey's letter". You will obtain "Desperate jealousy" and then, "Hurtley's motive".

If you combine the following Conclusions: Lucky throw, Neligan's innocence and Hurtley's motive, you can end the investigation now (the conclusion might not be right).

You can also end the investigation by combining Hurtley's motive, Neligan's motive and Feat of strength (the conclusion might not be right).