What is grants problem with going in the backdoor at Henri pichots house?

In the novel "The Last Good Kiss" by James Crumley, Grant faces a dilemma with going in the backdoor at Henri Pichot's house due to the risk of being caught and the implications of entering through a less formal entrance. This act symbolizes the tension between the characters and the illicit nature of the dealings happening within. Grant's choice reflects his desperation and the precarious situation he finds himself in, highlighting themes of danger and moral ambiguity.