I'm completely happy about how DH and I split our finances and what we each contribute. But we don't have any savings and that makes us both uncomfortable. DH's father, very kindly, transferred a studio flat into his name many years ago which we have recently sold. Profits from that sale are to be our nest egg for the future for our DCs - we're talking £15k. FIL has asked us to give him the £15k, originally because he needed to borrow it and would pay us back. Now he says because he'll invest it in stocks & shares and will be able to give us a better return than if we put it in ISAs etc. FIL is an ex-accountant but likes to fly 'below the radar' as he puts it and avoid tax. He has a criminal record from the 1970s for fraud. He's not clear about exactly what he'll do with this money or what our return would be. He says we can have it back whenever we ask for it. I want to just invest it as we decide even if that means less return. DH doesn't want to antagonise his father and says we should just give it to him because there's no way we wouldn't get it back and if his dad has asked us we should trust him. AIBU to feel uncomfortable about this? WWYD?