on the fiddle
US /ɑn ðə ˈfɪdl/
UK /ɑn ðə ˈfɪdl/

1.
fraude plegen, sjoemelen
involved in dishonest or illegal activities, especially involving money
:
•
He was caught on the fiddle, taking money from the company.
Hij werd betrapt op de fraude, geld nemend van het bedrijf.
•
Many politicians are suspected of being on the fiddle.
Veel politici worden verdacht van fraude.