The case of a British woman allegedly murdered by her pastor husband in Ghana took an astonishing twist last week when a court was told that she died of a heroin overdose. Hotel staff found the body of pregnant Charmain Speirs face-down in a bath where it is believed she had been lying for four days. Her husband Eric Isaiah Adusah – a self-proclaimed prophet and evangelical preacher – has been charged with her murder. Pastor Eric Isaiah Adusah has been charged with the murder of his pregnant wife, Charmaine Spears . Ms Speirs and Mr Adusah, who were married last September, were said to have argued during their stay . Local news reports said an autopsy showed the mother of one died of 'opiate heroin overdose'. Mr Adusah's defence lawyer Mr Adomako Acheampong has claimed in court that 41-year-old Ms Speirs was a habitual heroin user – and that her whole family were addicted to the drug. But speaking exclusively to The Mail on Sunday, Ms Speirs's brother Paul said that his sister had never touched drugs and it was 'an outrageous lie' to say his family were all addicts. He added: 'The defence lawyer seems to be suggesting she had been a heroin addict for years but that's absolute rubbish.' The gardener, 30, admitted that he had battled heroin addiction – but said it had been Ms Speirs who ensured he sought help at a Christian-run rehabilitation centre near Glasgow. He insisted he had now been drug-free for ten years. He also said his sister, who had an eight-year-old son from a previous relationship, would not have taken any such substances of her own accord, adding: 'My sister was always against drugs.' The couple pictured on a Christmas card. Mr Adusah is the leader of Global Light Revival Ministries church based in Tottenham, north London and has been active as a preacher in Britain since 2010 . And he rejected the claim that his entire family, including parents Peter, 63, a self-employed plumber, and 61-year-old cleaner Linda, were addicted to drugs, saying: 'My parents can't stand the things.' He revealed that Charmain's family had been surprised at her 'whirlwind marriage' to Mr Adusah last September and had never trusted him. And he said that her friends had noticed changes in Ms Speirs after she met and then married 28-year-old Mr Adusah, who was based in Britain but is originally from Ghana. Ms Speirs grew up in Arbroath in the Angus region of Scotland before moving to Swansea, where she studied photojournalism and then worked as a radiography assistant for the NHS. Last year she married Mr Adusah, leader of the Global Light Revival Ministries church based in Tottenham, North London. He has been active as a preacher in Britain since 2010. The couple travelled to Ghana early last month so Mr Adusah could preach at a three-day religious rally. On March 16 after the rally the couple checked in to the upmarket Mac-Dic Royal Plaza Hotel in Koforidua for five days. But when Mr Adusah left at dawn on their second day, he reportedly told reception staff not to disturb his wife as she was 'fasting and praying', and left a Do Not Disturb notice on the door. Hotel managers became concerned when Ms Speirs would not respond when they knocked. On March 20, porters used a spare key to gain access and made the grim discovery. Now her family are desperately seeking answers as they try to piece together fragments of information. Mr Speirs said: 'We've been left in the cold, we don't know a thing. My mum and dad just want to get Charmain's body back home.' A spokeswoman for the Foreign Office said: 'We are providing consular assistance to the family at this difficult time.' Mr Adusah has been charged with murder in Ghana and has had his application for bail rejected. He has not yet entered a plea. The case has been adjourned until later this month.
Charmain Speirs allegedly murdered by pastor husband Eric Isaiah Adusah .
Couple travelled to Ghana last month so Mr Adusah could preach at a rally .
Ms Speirs, who was pregnant, was found face-down in a bath by hotel staff .
The pastor's defence lawyer claimed Ms Speirs was a habitual heroin user .
But her brother Paul has said his sister had never touched drugs .