Use the gold bracelet and examine people in Perception mode at various points to get their reactions:
Case 2 - Look at Sticklers fingers to see that they are working the page of his book. Case 2 - Look at Wocky's girlfriend hand to see that she is scratching her neck. Case 3 - Look at Lamiroir's neck to see that she is swallowing. Case 3 - Look the boy's eyes when he is testifying with Lamiroir to see that they are moving. Case 4 - Look at Mr. Brushel's armpits to see that he is sweating. Case 4 - Look at Kristoph Gavin's hand to see that he tenses it.