Season
- Season 1 2004-04-07
- Season 0 2004-09-21
Episode
- Episode 1: Herr Dr. Tenma
- Episode 2: Downfall
- Episode 3: A Murder
- Episode 4: Night of the Execution
- Episode 5: The Girl of Heidelberg
- Episode 6: The Missing
- Episode 7: House of Tragedy
- Episode 8: Pursued
- Episode 9: The Girl and the Seasoned Soldier
- Episode 10: A Past Erased
- Episode 11: 511 Kinderheim
- Episode 12: A Little Experiment
- Episode 13: Petra and Schumann
- Episode 14: Left Behind
- Episode 15: Be My Baby
- Episode 16: Wolf's Confession
- Episode 17: Reunion
- Episode 18: Five Sugars
- Episode 19: Monster's Abyss
- Episode 20: Journey to Freiham
- Episode 21: Happy Holidays
- Episode 22: Lunge's Trap
- Episode 23: Eva's Confession
- Episode 24: Of Men and Dining
- Episode 25: Thursday's Boy
- Episode 26: The Secret Woods
- Episode 27: Proof
- Episode 28: Just One Case
- Episode 29: Execution
- Episode 30: Decision
- Episode 31: In Broad Daylight
- Episode 32: Sanctuary
- Episode 33: A Child's View
- Episode 34: At the Edge of Darkness
- Episode 35: My Nameless Hero
- Episode 36: The Monster of Chaos
- Episode 37: A Nameless Monster
- Episode 38: The Demon in My Eyes
- Episode 39: The Hell in His Eyes
- Episode 40: Grimmer
- Episode 41: Ghosts of 511
- Episode 42: The Adventures of the Magnificent Steiner
- Episode 43: Detective Suk
- Episode 44: Double Darkness
- Episode 45: The Monster's Afterimage
- Episode 46: Contact
- Episode 47: The Door to Nightmares
- Episode 48: The Scariest Thing
- Episode 49: The Cruelest Thing
- Episode 50: The Rose Mansion
- Episode 51: The Monster's Love Letter
- Episode 52: The Lawyer
- Episode 53: Determination
- Episode 54: The Escape
- Episode 55: Room 402
- Episode 56: The Neverending Journey
- Episode 57: That Night
- Episode 58: I Hate This Job
- Episode 59: The Man Who Saw the Devil
- Episode 60: The Man Who Knew Too Much
- Episode 61: The Door to Memories
- Episode 62: A Pleasant Dinner Table
- Episode 63: Unrelated Murders
- Episode 64: The Baby's Depression
- Episode 65: Johan's Footprints
- Episode 66: Welcome Home
- Episode 67: I'm Back
- Episode 68: Ruhenheim
- Episode 69: The Peaceful House
- Episode 70: The Town Massacre
- Episode 71: The Wrath of the Magnificent Steiner
- Episode 72: A Nameless Man
- Episode 73: Scenery for a Doomsday
- Episode 74: The Real Monster
Monster Season 1 Decision
Kenzou Tenma, a Japanese brain surgeon in Germany, finds his life in utter turmoil after getting involved with a psychopath that was once a former patient.
