Nepenthes 'Dark Secret' is a stunning cultivar that was created as part of the Borneo Exotics breeding program. The exact lineage of the plant is unknown but it is believed that it has a significant influence from N. ampullaria. Although the pitchers of this cultivar may initially resemble those of the N. 'Lady Luck', they will mature into a much darker shade with a peristome that is almost entirely black.

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Genus epithet 'Nepenthes' derived from Greek terms 'ne' (not) and 'penthos' (sorrow, grief), meaning 'no sorrow' or 'banished sorrow', as based on the ancient Greek name for an antidepressant drug called 'Nepenthe' which drives away all sorrows by the means of forgetfulness, and used here in connection with the reported medicinal qualities of some Nepenthes species.