A paedophile performed a sex act during a 19 minute Skype call with an account he thought was run by a 12-year-old girl.
Yet dad Andrew McMullen was actually talking to a police officer when he sent a series of vile messages asking them to perform sex acts and encouraging them to engage in sexual activity.
The 53-year-old was jailed by a judge at Liverpool Crown Court yesterday after admitting a range of sexual offences.