Driven by a need for answers, Louis Hartmann seeks out the assistance of the Arne Detective Agency, hoping they can unravel the mystery surrounding his father's death.

Lynn still recalls the moment she first encountered Arne, the decision to enlist his aid in uncovering the unsettling nature of her father’s recent actions.

Arne stumbled upon a startling revelation regarding Lynn’s father, while Gordon unveiled the grim history concealed within the walls of the Reinweiß mansion.

Lynn and Arne alike find themselves unsettled by unexpected meetings, each one casting a shadow of doubt upon their progress.

Lynn and Arne gathered the household staff, intent on dissecting the evidence and employing sharp deduction to unmask the perpetrators.

Her tail dragged a shimmering path across the cobblestones as the mermaid arrived, a creature of sorrow and urgency, at the detective agency's door. She sought answers, a reason woven into the cruel act of betrayal: why had the one she love…

Arne pursued a jewel thief, his steps sure and steady. Meanwhile, Lynn delved into a troubling string of vanishings, each linked to the city's grandest art museum.

Lynn and Arne follow the threads of vanished men and a missing jewel, leading them inexorably to a startling revelation.

Arne and Lynn were assigned to look into a man whose behavior had shifted, seemingly following an accident, raising concerns that he might be unfaithful to his wife.

Driven by an idle curiosity, Arne began to look into a perplexing murder—one seemingly confined within a sealed room—and quickly discovered that the situation was far more complicated than its appearance suggested.

A troubling link emerged for Arne as he examined the files from each of the five cases handled by the Arne Detective Agency.

With grim determination, Lynn and her companions fought their passage through ranks of Dracula’s soldiers, desperately racing against time to save Arne before it was truly too late.