Naoki Urasawa's Monster Wiki
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Spoiler Warning: Plot details, ending details, or both are in the text which follows.

An Erased Past is the tenth episode of the anime. It covers the events of chapters 17 and 18 of the manga.


Tenma visits the Springer residence while investigating about the murders, there he finds Otto Heckel trying to steal some valuables from the house. The police arrive and both have to escape.

Otto tries to make a deal with Tenma: he will lead him to the person who killed the Springers if he accepts to work with him as an underground surgeon for criminals.

Tenma and Otto go to the killer's apartment. There, Tenma sees a man with a gun, who tells him that he befriended Johan and that he was invited to the Springer residence several times. One day, the Springers decided to destroy a bed of sunflowers to build a parking spot. Since the man tells he used to walk with his mother in a sunflower field, he told Johan -then called Erich- that this was a terrible thing, Johan agreed and told the man that he was no longer part of the Springer family and asked him to kill his foster parents.

When Tenma is about to leave, the man tells him that Johan left a message for him at the Springer residence. Then the man shoots himself.

Tenma and Otto go back to the Springer residence where they find Johan's message written on a wall.

Otto tricks Tenma into a medical gig consisting of saving a terrorist's life. Tenma refuses to treat Karl Brandt. Finally he does only some emergency procedures and tells his partner to take him to an hospital.

Otto leads the police to the terrorists' hideout after watching on TV that there is a reward for both of them. Tenma and Karl leave the hideout. Tenma tells Karl that he saved him because he is human. Later, it is know that both terrorists surrendered to the police.



  • Springers killer (suicide)


  • Kenzo Tenma: "Even if you forget the past, you can't erase it."
Episodes of Monster
1. Herr Dr. Tenma • 2. Downfall • 3. A Murder • 4. Night of the Execution • 5. The Girl from Heidelberg
6. Disappearance Report • 7. Mansion of Tragedy • 8. The Fugitive • 9. The Girl and the Seasoned Soldier
10. An Erased Past • 11. Kinderheim 511 • 12. Modest Experiment • 13. Petra and Schumann • 14. Left Behind
15. Be My Baby • 16. Wolf's Confession • 17. Reunion • 18. Five Sugars • 19. Monster's Abyss • 20. Journey to Freiham
21. Happy Holidays • 22. Lunge's Trap • 23. Eva's Confession • 24. Of Men and Dining 25. Thursday's Boy
26. The Secret Woods • 27. Proof • 28. Just One Case • 29. Execution • 30. Decision • 31. In Broad Daylight
32. Sanctuary • 33. A Child's View • 34. At the Edge of Darkness • 35. My Nameless Hero • 36. The Monster of Chaos
37. A Nameless Monster • 38. The Demon in My Eyes • 39. The Hell in His Eyes • 40. Grimmer • 41. The Ghost of 511
42. The Adventures of the Magnificent Steiner • 43. Detective Suk • 44. Double Darkness • 45. The Monster's Afterimage
46. Contact • 47. The Door to Nightmares • 48. The Scariest Thing • 49. The Cruelest Thing • 50. The Rose Mansion
51. The Monster's Love Letter • 52. The Lawyer • 53. Determination • 54. The Escape • 55. Room 402
56. The Never-Ending Journey • 57. That Night • 58. I Hate This Job • 59. The Man Who Saw the Devil
60. The Man Who Knew Too Much • 61. The Door to Memories • 62. A Pleasant Dinner Table • 63. Unrelated Murders
64. The Baby's Depression • 65. Johan's Footprints • 66. Welcome Home • 67. I'm Back • 68. Ruhenheim
69. The Peaceful House • 70. The Town Massacre • 71. The Wrath of the Magnificent Steiner • 72. A Nameless Man
73. The Landscape of the End • 74. The Real Monster