Short Answer 
Dr. Jekyll’s confession regarding the murder of Danvers Carew is outlined in three steps: he describes his transformation into Mr. Hyde through a potion, admits to the violent actions taken by Hyde during moments of stress, and ultimately expresses remorse over the consequences of those actions, highlighting the tragic implications of his dual nature.
Step 1: The Transformation
In his confession, Dr. Jekyll explains the process of transformation into *Mr. Hyde*. He describes how he created a *potion* that allowed him to separate his *good* and *evil* selves. This transformation plays a crucial role in understanding the context of the murder, as it highlights the duality of his character and the uncontrollable nature of his darker side.
Step 2: The Act of Violence
Dr. Jekyll’s letter elucidates the circumstances surrounding the murder of *Danvers Carew*. He admits to losing control and allowing *Hyde* to emerge during times of stress. His confession reveals that Hyde acted upon violent impulses, leading to Carew’s death. This understanding helps clarify that Jekyll’s *inner conflict* directly contributed to the tragic events.
Step 3: The Consequences of Evil
Ultimately, Dr. Jekyll’s confession expresses his deep remorse over the murder and his struggle with the *evil actions* committed by Mr. Hyde. He conveys the devastating effects of his experiments, which culminated in the death of an innocent man. By accepting responsibility, Jekyll sheds light on the true *nature* of Hyde’s actions, illustrating the profound implications of his dual existence.