Dreams involving houses often represent aspects of the self or different areas of your life. In your dream, the presence of another home on the property might symbolize an aspect of yourself or someone else that you are curious about but find unsettling.

The fact that this other home is being used for training murderers suggests a conflict between your curiosity and a fear of what you might discover. The act of sneaking in reflects your desire to uncover hidden truths or explore darker aspects of your psyche or surroundings. Being caught but not punished might indicate that you feel a certain level of safety or protection in your life, even when exploring difficult or dangerous situations.

The presence of Dwayne "The Rock" Johnson as the trainer could represent a figure of strength and charisma, but in this context, it may also suggest the idea of a powerful influence that could lead one astray. This could reflect your feelings about authority, power, or the impact that strong personalities have on your decisions.

Overall, this dream could be prompting you to examine any hidden fears or dark thoughts in your life, as well as the influences you allow into your personal space. Consider what aspects of your life feel like they are training you to take risks or make choices that may not align with your values. Reflecting on these elements could help you gain deeper insights into your current situation.