Harry's death is the most tragic in the novel since he died protecting Agnes. It's also the only death where the victim is killed by deception (rather than a bullet). Instead of being shot to death like Geiger and Brody, Harry is tricked into sharing a drink with Canino. But the drink is poisoned. Check out the pacing of the sentences and the way the suspense is built up. Marlowe hears a series of disturbing noises: coughing, retching, thud, glass shattering. All culminating in the image of Marlowe's clenched fingers. That sent chills down our spines, how bout you?