If you loved Funeral in Berlin, try The Ipcress File
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
What they share
Theyboth carry the paranoid mood tag, and they sit in Thriller territory. If that's the register that drew you to Funeral in Berlin, the second film will land in a comparable space — through a different lens.
paranoid
What The Ipcress File is
London, mid-60s. A ringing phone. Harry Palmer, a decidedly un-Bond-like spy, is pulled into a missing-persons case. Soon, he finds himself chasing a brain-drain of top scientists and facing enemies within his own ranks. A very British Cold War paranoia.

