dark and dramatic book cover design featuring a fullbody shot of lion's silhouette facing forward, trapped behind prison bars. The lion's body should be a solid black shape with minimal details, but its eyes should glow intensely, suggesting it's ready to break free. The background should be very dark, with dramatic backlighting highlighting the lion's outline and the bars of the cage. The overall image should be high contrast and minimalist, focusing on the powerful symbolism of the caged lion