STAFF in a massage parlour and sauna were threatened at gunpoint in a terrifying robbery that saw two men make off with hundreds of pounds in cash.One robber brandished a handgun at staff in the massage parlour and the other a knife during the planned raid of the premises in Crouch End Hill, Crouch End, on Monday night.Witnesses at the parlour say one of the suspects, a black man aged about 25, had visited earlier that day between 3pm and 4pm, and arranged to return with another man for a treatment.When he arrived with another man just before midnight, they produced the weapons and ordered staff to hand over property, before asking if there was a safe.They left staff uninjured and made off with hundreds of pounds in cash, plus mobile phones and an iPod, say police.Both suspects are believed to have run away up Crouch End Hill, towards Parkland Walk.Police are appealing for witnesses to the robbery.