The chilling moment a man is seen calmly drinking a pint in his local pub after brutally murdering his ex-wife has been captured on CCTV . Mark Donovan inflicted 70 separate injuries on Elise Mason in the home they once shared in Chelmsford, Essex, before heading to the pub, ordering a drink and dumping her phone in the toilet. The 39-year-old killer then ordered a Chinese takeaway, and headed with it to IIford Police Station. Donovan strangled the beloved mum-of-two and battered her with a