The Intruder is the story of death, and the its personification entering a house as a grandfather goes insane seeing it walk through the house.
I was surprised to see the big twist at the end, because the play really leads you to believe that the grandfather is the one who's about the die. But while the play builds the tension about this invisible intruder, the imagery to me was very obvious and something that literally no one besides the grandfather were noticing. I mean, seriously, it's the Grim Reaper. You can hear a scythe being sharpened in the house. It's pretty damn obvious.
Along with that, I've read many short plays with some fantastic character development, and this play seems to be more servicing towards the general imagery of death, and while that isn't necessarily a bad thing, I would've liked to learned more about the father and the uncle, as some of the conversations they had purely with each other seemed to be hinted towards something deeper between them that could really be interesting to see fully dramatized.
The Intruder is an intriguing, thrilling play with some pretty obvious comparisons to death, but like Cock-a-Doodle Dandy, I still enjoyed the play despite what problems I had with it.