Find hidden files on HD?

[retrocool]

RESOLVED
A friend of a friend recently died, in his early 40s. I have been given an external hard drive which I am told has precious video footage on it, which the friends and family of the deceased would like to recover.

The disk is partitioned into two mac OS extended Journaled volumes. One is blank. The other appears to have things on it.

Finder reports the disk as:
Capacity: 466GB
Available: 193GB
Used:273GB

This gives some hope that the film footage is on there.
However it shows only the following files, which altogether take up less than 100MB:

/Volumes/north/.Spotlight-V100
/Volumes/north/.DocumentRevisions-V100-bad-1
/Volumes/north/.DS_Store
/Volumes/north/.fseventsd
/Volumes/north/Desktop DB
/Volumes/north/Desktop DF
/Volumes/north/.Trashes
/Volumes/north/.TemporaryItems
/Volumes/north/.com.apple.timemachine.supported
/Volumes/north/.com.apple.timemachine.donotpresent

Where are all the other files???????

I have run Disk First Aid, which shows no errors.

Any ideas?
[doublepost=1541152681][/doublepost]Doh! Solved it already.
I used terminal to list all the files recursively

ls -aR​

It threw up an error:

ls: .Trashes: Permission denied​

So I changed the permissions on .Trashes, and bingo, there were the files.

 

[artnoi]

In Finder, press the combination of command+shift+dot(.) and this should enable viewing hidden files and folders.

Hidden files and directories in UNIX and UNIX-like systems are prepended with a dot.