191.929 दृश्य
Frank and Lu are hired to unmask the "Voice in the Dark" who threatens to destroy Wintermas; Sebastian is faced with his first solo case.
पहिलो एयर मिति : Feb 26, 2018
अन्तिम एयर मिति : Dec 16, 2022
एपिसोड : 40 एपिसोड
सीजन : 4 सीजन
रनटाइम: 45 मिनेट
स्टुडियो: BBC One
देश: United Kingdom
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