fbb's interest was, indeed, aroused.
But there is no route 47 anymore.
Bellmansro at Djurgården (south east of the City Centre) is now the terminus of tramline 7 ...
... and here is a tram to prove it!
The book's 47 continues north west from the centre. It runs, says the book, via Karlbergsvägen ...
Instead of turning left, the bus runs across the main road (remember this is 1967 - it looks completely different now) and embeds itself in the fence of a disused railway yard. The crime has been committed!
Exciting, isn't it?
Nothing performs this terminal triangular loop today ...
fbb guesses that service 47 in 1967 terminated at the "blue bus logo" ready to return to the centre via Karlbergsvägen. The stop is still there.
Todays route, loosely following the 47, is numbered 69.
It runs the full length of Karlbergsvägen, burrows under a spaghetti of road bridges ...
... (the likely former 47 terminus is bottom right) and has a nice little terminal loop at "K Tomteboda" a little further on.
"K" is Karolinska Institutet.
The Karolinska Institutet, sometimes known as the (Royal) Caroline Institute in English, is a medical university in Solna within the Stockholm urban area, Sweden, and one of the largest and most prestigious medical universities in the world.
So where, exactly, is "Karlberg", terminus of the 47? More in due course.
fbb has, so far, learned a few Swedish words ...
köp biljett med mobilappen
... and a few more. It will get better with time. And apologies to any Swedish speaking readers if fbb has incorrectly incorporated his diacritics - it can be painful because there are quite a lot in Swedish!