Teen Wolf (2011–2017)
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Letharia Vulpina 

Stiles is back and Scott must prevent a disaster; Lydia and Allison seek help from an unlikely source.


Russell Mulcahy


Jeff Davis (developed by), Jeff Davis | 1 more credit »

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Episode cast overview, first billed only:
Tyler Posey ... Scott McCall
Crystal Reed ... Allison Argent
Dylan O'Brien ... Stiles Stilinski / Nogitsune
Tyler Hoechlin ... Derek Hale
Holland Roden ... Lydia Martin
JR Bourne ... Chris Argent
Melissa Ponzio ... Melissa McCall
Linden Ashby ... Sheriff Noah Stilinski
Daniel Sharman ... Isaac Lahey
Ian Bohen ... Peter Hale
Orny Adams ... Coach Bobby Finstock
Seth Gilliam ... Dr. Alan Deaton
Arden Cho ... Kira Yukimura
Charlie Carver ... Ethan
Max Carver ... Aiden


Vet druid Deatan (ab)uses the local Yakuza lord's pet dog poisoning to harvest the rare venomous moss Letharia Vulpina he needs to use on werewolves. Allison accompanies Lydia, who suffers from mystery noises, to consult Peter in the asylum, who demands in return she helps read his sister (Derek's mother)'s message from the dragon nails. The sheriff, deputy Jordan Parrish and Rafe McCall deal with bomb surprises. Kira Yukimura uses her gift to stem the new power station disaster caused by rogue Stiles and discovers her mother is up to major magic. Stiles assures Scott and Derek he's back to normal and seems to save the class during a field run, but actually tricks everybody. Written by KGF Vissers

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Release Date:

17 February 2014 (USA) See more »

Company Credits

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Did You Know?


The lichen Letharia vulpina exists, but it does not grow naturally on rock, as suggested in the show. The natural habitat of L. vulpina is the dry bark of conifer trees (pine, spruce etc). See more »


Young Katashi: You really think Yuki got in here and ate this stuff?
Dr. Deaton: Actually, I think Yuki probably doesn't come anywhere near here. I doubt if you could even drag him in. Some part of him probably senses what happened here. To your father and the nogitsune possessing him. This particular lichen is called Letharia vulpina. Wolf lichen. They used it to poison wolves and foxes. They'd put out pieces of meat with crushed glass and bits of the lichen in it. The glass perforated the intestines of the animal so ...
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References The Terminator (1984) See more »


Hold On
Performed by William Fitzsimmons
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