My ex brother-in-law paid a cheque for £12000 into his personal account. The cheque was made out in the names of both him and my sister. This money was only discovered when she was gathering financial information for divorce mediation. My sister had no prior knowledge of this money and never saw a penny of it. The bank have admitted that they were wrong to accept the cheque into his account and have said if she were to take the matter further they would repay her half of the money and persue him to recover their losses. This would mean a full investigation from the bank and the police would be involved. Does anyone have experience of this kind of thing? We would like to know what the investigation might involve and what the outcomes might be. The way in which he acquired this money is also in doubt and suspect the bank might try to pass the buck if the money was obtained frauduently. If anyone can offer help with this we would be very greatful. We have tried to get legal advice on this matter but have not found a local solicitor with any experience in this particular subject. Thank you