UKPassats

Need help! Missus car is getting wet. Just done pollen seal, and e up box on bulk head, all drains clear. Spent all da sunday with seats out drying floor and carpet. Put back together checked today and wet again. What's odd ia that the wet area is top of ccm box and the top of metal floor brake that front of passenger seat bolts to. Also under the wiring loom. But front is dry, cabl connectors are dry and sound padding under glove box is dry. Where and how can this be getting wet? Oh also checked doors by running water down them and nothing.
It's driving me mad.
Help please.
Dave