Digimon: Digital Monsters

Curse This Curse (Marcus's Bad Day) (5x10)

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Thomas invites Kristy, Marcus, and Agumon to his mansion for lunch. Marcus becomes the unfortunate victim of strange unexplained accidents. Agumon sees the culprit is a Soulmon, who is invisible to everybody else except for him. Marcus and the others do not pay attention to Agumon's warnings, and the pranks become more frequent and more dangerous.