"A Psychical Invasion" by Algernon Blackwood is a gripping tale about Dr. John Silence, an unconventional physician specializing in paranormal cases. When a concerned woman approaches him about her friend, Felix Pender, a once-successful humorist now crippled by a strange affliction, Silence is drawn into a mystery beyond ordinary medical explanation. Pender, who suddenly loses his ability to write and is overwhelmed by a terrifying presence in his home, faces a force that is slowly erasing his talent and will to live. Dr. Silence must confront powerful supernatural entities to save Pender's soul before it’s too late.