The Mimic: Season 1, Episode 2

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Martin is feeling lonely and timid, but absorbed by his impersonations of Christopher Walken he convinces a gorgeous American swimsuit model to send him naked pictures. Having quit work for a total of three days, Martin returns to find his younger co-worker Chelsea (played by Amy Metcalf) is now in charge. Feeling restless and unhappy he calls his former lover Dionne for an explanation as to why she's kept his now 18-year-old son Steven a secret. His mate Neil is preoccupied with online dating, so Martin heads for the refuge of his favourite Irish pub unaware that Steven is searching for him. [Source: Channel 4]