Use Toby to track the strange scent from the laboratory | The Kew Gardens Drama SH: Crimes and Punishments Guide

Collect Toby from the house and take him to Kew Gardens.

As Toby, in the laboratory, go behind the table in the center of the room and follow the green trail. Go outside and walk along the benches (to the left of the flower bed). Head to the building opposite the laboratory. Go past it (from the left side) and step onto the lawn (between the wall and the hedge). When in the corner, sniff the Hidden place.

This is what Toby's found.

As Holmes, approach the wall to check the place. Examine the Hidden bottle (Buried chemistry flask). In the close-up mode, look at the Chemical solution and a caterpillar at the bottom.

Enter the Palm house and talk to Albert about the Divine Syndicate. Ask Hamish and Margaret about the same thing.

Go to Baker Street. Approach the Analysis table and select: Analyse unknown liquid. Click on the bottle on the table. Take the Pipette from the stand and gather some of the liquid. Pour it into the test tubes in front of you.

Look at one of the Test tubes in the close-up mode: inhale the Unknown liquid and taste it. When Holmes places the test tube back on the stand, activate the Gas burner on the left. When the liquid evaporates, Holmes will examine the precipitate in the test tube.

Take the Pipette again and take some of the Reagent from the flask, which Watson gave to Sherlock. Pour it into the second Test tube. Take it and examine the Unknown liquid once again. Evidence will appear in the Casebook: Deadly experiment and Caterpillars.