Demon-Killing Knife
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| Name | Ruby's Knife |
| Manufacturer | Unknown |
| Powers | Can kill Black Eyed Demons |
| Location/Owners | Currently in Sam's possession |
| Episodes | First Appearance: 3.01 The Magnificent Seven Last Appearance: 6.21 Let It Bleed |
This knife originally belonged to Ruby and is capable of destroying most demons. Its blade is inscribed with symbols and the handle is wood or bone. Alastair is immune to its killing power but the weapon can cause him great pain. It also has no effect on Angels.4.01 Lazarus Rising
The maker and designer of this weapon are unknown. However, the language of the writing on the knife looks to be Indo-European, most likely Kurdish or Farsi.
Appearances
3.01 The Magnificent Seven
Ruby appears during the battle with the Seven Deadly Sins, and kills three of the demons with a dagger. Until this point, the only ways of getting rid of a demon had been exorcism, which sent it back to Hell, or with the Colt, which killed it.
Bobby states that he has never heard of a blade that could kill demons.
3.09 Malleus Maleficarum
Ruby tries to use the knife to kill Tammi but loses it in the ensuing fight. Dean eventually kills Tammi with it.
3.16 No Rest For The Wicked
Dean steals the knife in the hope of using it against Lilith. However, when Sam attacks her with it, she stops him with her powers. Later, after Dean has been killed, Sam is able to withstand her power, and she vacates the body she is using to escape Sam's attack with the knife.
4.01 Lazarus Rising
Dean stabs Castiel with the knife, but it has no effect on him.
4.09 I Know What You Did Last Summer
Sam stabs Alastair with the knife, but it appears to have no effect on him. While escaping from Alastair they lose the knife.
4.10 Heaven And Hell
Alastair uses the knife to torture Ruby. He says to her "This knife of yours... It's an exquisite piece. You must tell me where you found it." Eventually Sam and Dean get the knife back from Alastair.
4.16 On The Head Of A Pin
Alastair beats Dean unconscious after being freed from the devil's trap. Castiel arrives and throws the demon-killing knife into his shoulder. Castiel twists the knife with his powers, but Alastair manages to pull it out and lunges at the angel. Alastair attempts to send Castiel back to Heaven, but is interrupted by Sam.
4.22 Lucifer Rising
Castiel uses the knife to cut his arm so that he can use his blood to draw the Angel Banishing Sigil and temporarily get rid of Zachariah. Castiel gives the knife to Dean before sending him to St. Mary's Convent to stop Sam from killing Lilith. While he cannot prevent the breaking of the final seal - Lilith's death - Dean uses the knife to kill Ruby, who is revealed to have manipulated Sam and his abilities so that Lucifer could be freed.
5.01 Sympathy For The Devil
Meg orders the possessed Bobby to kill Dean with Ruby's Knife, but just as he is about to strike, Bobby manages to battle the demon possessing him and stab himself in the abdomen instead. The stab wound Bobby inflicted on himself with Ruby's Knife led to his inability to walk.
5.02 Good God Y'All
Dean and Sam go for supplies, and while Sam is getting salt from a store, two teenagers with black eyes enter. Sam kills them with Ruby's knife.
5.12 Swap Meat
Dean tries to use the knife on the possessed Nora.
5.14 My Bloody Valentine
Sam follows a demon into an alley and attacks him with Ruby's Knife.
5.20 The Devil You Know
Sam uses the knife to try to kill Crowley - and slices into the Impala's rear seat when the demon disappears. He makes another attempt, but is again unsuccessful. Later, Dean takes the knife and uses it to kill a demon protecting Brady. Sam eventually uses the knife to kill Brady.
5.21 Two Minutes To Midnight
Sam carries the knife while searching for Pestilence with Dean. Castiel than uses it to chop off Pestilence's finger to obtain his Ring and kill the Nurse!Demon.
Later at Niveus Pharmaceuticals factory, Bobby kills two demons with it.
6.10 Caged Heat
Meg appears and captures Sam and Dean stealing the knife from them. Sam gets it back from her, using it to kill one of her demon minions.
Later when Dean and Sam are imprisoned by Crowley, the possessed Christian Campbell uses it to torture Meg, until he is killed with it by Dean.
After trapping Crowley under a Devil's trap, Meg tortures him to find out if he can restore Sam's soul. When he denies he can, Dean hands the knife to her so she can kill Crowley, but he overpowers her and uses the knife to break the Devil's trap. Castiel then appears with Crowley's bones, which he burns to kill Crowley. Seizing the moment as a distraction, Meg escapes before Dean can kill her.
6.18 Frontierland
(Deleted Scene)Guy Bee has said that when Samuel gives Sam The Colt, Sam asks him if he'll be alright unarmed and Samuel opens his draw and pulls out the knife. Source:[1]
6.20 The Man Who Would Be King
Bobby uses the knife to torture a demon for information on Crowley's residence. He stabs the demon in the thigh, causing him great pain.
6.21 Let It Bleed
Dean uses it against demons he is torturing, as well as those guarding Lisa and Ben.
7.08 Season Seven, Time for a Wedding!
Dean has the knife when he confronts Guy the crossroads demon. He loses it in the fight, and Becky uses it to kill Jackson
Links
- Ruby's Knife as reproduced by angelicfoodcake
