In front of us were "the detectives in charge of the case." The well-known glib phraseology passed rapidly through my mind in the interval before Poirot opened the proceedings. 
I thought of the glib way in which those charged with investigating the crime were described.
With the case mysteriously closed, I wondered why they had assigned no one to investigate it.
People are playing.
When starting it wasn't that great, felt like a chore.
It was stupid of you to guess.
A child runs away from birds.
It's $10 an hour.
A man sits on a table while people gather.