In which we accompany the hapless Lewis Romayne to Boulogne, where a chance duel arising from a card-table quarrel leads to dire consequences amidst the fog and gallantry of a bygone France. The scene closes with Romayne burdened by shock and a stirring encounter aboard the steamer, leaving a sombre question lingering in the air.

In which two ladies of contrasting beauty engage in a morning of tea and tender confidences, where young Stella reveals the troubled fascination she feels for a mysterious gentleman encountered at sea, stirring Lady Loring’s protective curiosity and prompting discreet inquiries within their shared circle. Meanwhile, a determined priest named Father Benwell prepares to entrust a grave and urgent commission to a sincere young man, signalling the stirring of unseen forces in the lives they touch.

In which the troubled Romayne seeks refuge at the solitary Vange Abbey to escape the haunting remonstrances of his conscience and the eerie voice that besets him in the silence of night, while his concerned companion endeavours to steady his fraught spirit and persuade him toward aid and hope. Amid the ancient solitude and moonlit moors, they encounter strange visitors and ponder remedies, revealing the tender struggle between despair and the faint promise of solace.

In which two acquaintances, enjoying a serene sojourn on the Neapolitan coast, chance upon a peaceful family scene in a secluded bay, replete with music and mirthful play. As they observe from their boat, they reflect with a gentle curiosity upon past characters and mysteries left behind, the soft echoes of guitar and laughter fading as they sail onward.

In which Nanina, seeking a breath of fresh air, stumbles upon a secret meeting that unveils a tangled web of intrigue surrounding a mysterious wax mask and a dubious bargain. Following a tense confrontation and a delicate negotiation, she becomes the unexpected holder of a truth that promises to shift the course of events with cautious hope.

In which Nanina becomes consumed with anxiety and devotion as she tends to the ailing Count Fabio, whose mind is haunted by an unsettling vision from the masquerade, while those around him grapple with the perplexing nature of his illness. Meanwhile, Nanina faces pressing demands on her own time and affections, leading to a strange discovery at the sculptor Luca Lomi’s studio that casts further mystery upon the unfolding events.

In which the master-sculptor Luca Lomi confides in the count's doctor a grave familial secret that intertwines with a mysterious conspiracy aimed at controlling the count's future marital prospects, revealing a tangled web of duty, faith, and personal ambition. The narrative gently unfolds through a detailed confession, culminating in a careful preparation for an experiment involving the count, a wax mask, and the ever-watchful Nanina.

In which Signor Andrea D’Arbino discovers Count Fabio d’Ascoli in a swoon and they resolve to investigate the mysterious figure behind a yellow mask seen at the masquerade. Their inquiries lead them to the coachman who strangely admits to having driven the masked lady to and from the burial-ground, stirring a profound and unsettling reaction in Fabio.

In which the solitary Count Fabio wrestles with a sudden, inexplicable reluctance to attend a masked ball, only to find himself confronted by a mysterious woman in a striking yellow domino who seems to haunt his every turn amidst the gaiety and clatter of the evening’s entertainments. Despite the throng and the laughter, an uncanny chill attends their encounters, culminating in a bewildering revelation that stirs old memories and unsettles the very foundations of his guarded composure.

In which the sombre shadow of bereavement alters the lives of the Lomi family, leading Father Rocco to a withdrawn routine interrupted only by a puzzling breach with young Fabio and the receipt of most perplexing anonymous letters. The uneasy meeting between priest and nobleman, fraught with veiled warnings and unexplained reticence, sets the tone for an imminent event that neither wishes to face with full understanding.