client contacts photographer and eventually offers to not only pay up front the deposit for the photographer's fee but also the full amount the photographer will need to pay to the “modelling agency”
once the photographer pays the scam modelling agency, the original payment to the photographer is reversed within a few days
some models insist on a deposit for a model shoot which they will keep if the photographer does a no-show - but some unethical models may use this process to scam photographers by not showing up and keeping the deposit
Scams against models
kidnapping after paid modelling with paid airfares
this seems to be rare but there have been a few well publicized cases in Europe
the photographer TFP scam
well not really a scam, but it is unfortunately common for models to agree to a TFP shoot but then not receive any images, ever