Kirkpatrick Macmillan bridge - named after the inventor of the modern-day bicycle.

The Case of the Pig in the Evening Suit
besom - lowly woman
blether - chatter
caber - a log
chookie - sartorially inelegant person
chunter - mutter
coorie - bend down
dreich - drizzly and dull
footer - see plitter
guddle - to grope in water
jiggered - very tired
keek - peek
neb - nose
plitter - see footer
rumyll - roll about
scoosh - squirt
sleekit - sneakily nasty
sooking - sucking
swithering - puzzling

The Case of Colourful Clothes and Kilts
cawing - turning
dicht - light wipe
haud yer wheesht - be quiet
howk - yank
natter - talk
scunnered - weary
seeventy-echt - 78
shoogle - shake

The Case of the Hermit's Guest Bedroom
bowk - retch
birl - turn
dreich - dull, damp
breeks - trousers
oose - fluff
nicht - night
kent - knew
sweltering - hot
snecked - latched