Line of Duty viewers were left scratching their heads as they were perplexed over how Ryan Pilkington managed to join the Central Police force.Fans met Ryan back in series one as a young teenager who worked for Tommy Hunter.He collected drugs and debts and delivered burner phones to Hunter's team.Ryan returned in series five as an organised crime gang member and he murdered John Corbett.At the end of the series, he joined the Central Police force as a student police officer.Tonight, Kate became suspicious of Ryan and, after doing a background check, found out she had interviewed him when he was a juvenile offender.
Viewers were baffled that the police didn't find out who Ryan was sooner, as one viewer said: "Bit unrealistic Ryan being in.
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