S01E21: Happy Holidays
Nina confronts Muller, one of the two detectives responsible for the death of her foster parents, the Fortners. Muller discovers that his protege, Roberto, is actually working for Johan and is now tasked with killing Nina.
Previous Episode 
Season 1
Herr Dr. Tenma
S1E1 / 07 Apr 2004
Downfall
S1E2 / 14 Apr 2004
A Murder
S1E3 / 21 Apr 2004
Night of the Execution
S1E4 / 28 Apr 2004
The Girl of Heidelberg
S1E5 / 05 May 2004
The Missing
S1E6 / 12 May 2004
House of Tragedy
S1E7 / 19 May 2004
Pursued
S1E8 / 26 May 2004
The Girl and the Seasoned Soldier
S1E9 / 02 Jun 2004
A Past Erased
S1E10 / 09 Jun 2004
511 Kinderheim
S1E11 / 16 Jun 2004
A Little Experiment
S1E12 / 23 Jun 2004
Petra and Schumann
S1E13 / 30 Jun 2004
Left Behind
S1E14 / 07 Jul 2004
Be My Baby
S1E15 / 14 Jul 2004
Wolf's Confession
S1E16 / 21 Jul 2004
Reunion
S1E17 / 28 Jul 2004
Five Sugars
S1E18 / 04 Aug 2004
Monster's Abyss
S1E19 / 11 Aug 2004
Journey to Freiham
S1E20 / 18 Aug 2004
Happy Holidays
S1E21 / 25 Aug 2004
Lunge's Trap
S1E22 / 01 Sep 2004
Eva's Confession
S1E23 / 08 Sep 2004
Of Men and Dining
S1E24 / 15 Sep 2004
Thursday's Boy
S1E25 / 29 Sep 2004
The Secret Woods
S1E26 / 06 Oct 2004
Proof
S1E27 / 13 Oct 2004
Just One Case
S1E28 / 20 Oct 2004
Execution
S1E29 / 27 Oct 2004
Decision
S1E30 / 03 Nov 2004
In Broad Daylight
S1E31 / 10 Nov 2004
Sanctuary
S1E32 / 17 Nov 2004
A Child's View
S1E33 / 01 Dec 2004
At the Edge of Darkness
S1E34 / 08 Dec 2004
My Nameless Hero
S1E35 / 15 Dec 2004
The Monster of Chaos
S1E36 / 22 Dec 2004
A Nameless Monster
S1E37 / 12 Jan 2005
The Demon in My Eyes
S1E38 / 19 Jan 2005
The Hell in His Eyes
S1E39 / 26 Jan 2005
Grimmer
S1E40 / 02 Feb 2005
Ghosts of 511
S1E41 / 09 Feb 2005
The Adventures of the Magnificent Steiner
S1E42 / 16 Feb 2005
Detective Suk
S1E43 / 23 Feb 2005
Double Darkness
S1E44 / 02 Mar 2005
The Monster's Afterimage
S1E45 / 09 Mar 2005
Contact
S1E46 / 16 Mar 2005
The Door to Nightmares
S1E47 / 23 Mar 2005
The Scariest Thing
S1E48 / 30 Mar 2005
The Cruelest Thing
S1E49 / 06 Apr 2005
The Rose Mansion
S1E50 / 13 Apr 2005
The Monster's Love Letter
S1E51 / 20 Apr 2005
The Lawyer
S1E52 / 27 Apr 2005
Determination
S1E53 / 04 May 2005
The Escape
S1E54 / 11 May 2005
Room 402
S1E55 / 18 May 2005
The Neverending Journey
S1E56 / 25 May 2005
That Night
S1E57 / 01 Jun 2005
I Hate This Job
S1E58 / 08 Jun 2005
The Man Who Saw the Devil
S1E59 / 15 Jun 2005
The Man Who Knew Too Much
S1E60 / 22 Jun 2005
The Door to Memories
S1E61 / 29 Jun 2005
A Pleasant Dinner Table
S1E62 / 06 Jul 2005
Unrelated Murders
S1E63 / 13 Jul 2005
The Baby's Depression
S1E64 / 20 Jul 2005
Johan's Footprints
S1E65 / 27 Jul 2005
Welcome Home
S1E66 / 03 Aug 2005
I'm Back
S1E67 / 10 Aug 2005
Ruhenheim
S1E68 / 17 Aug 2005
The Peaceful House
S1E69 / 24 Aug 2005
The Town Massacre
S1E70 / 31 Aug 2005
The Wrath of the Magnificent Steiner
S1E71 / 07 Sep 2005
A Nameless Man
S1E72 / 14 Sep 2005
Scenery for a Doomsday
S1E73 / 21 Sep 2005
The Real Monster
S1E74 / 28 Sep 2005
Hidenobu Kiuchi
Tenma (voice)
Nozomu Sasaki
Johan Liebert (voice)
Mamiko Noto
Nina Verdona (voice)
