This is brilliant! I loved it!
Just a few more suggestions.
Page 5 - The house sale - Mr Mirtis knows about the pancakes - why doesn't he know about the house sale? Rewrite this bit.
Page 7 - Dials - leave out "999" on both phones.
- Joke - if you'd like to hear it? - I think repeat is the wrong word.
Page 10 - You're... Death? (capitalize the D in a couple of bits of dialogue.
Page 11 - When it's so morbid?
Page 12 - I always need a list when I go to the supermarket.
Page 14 - ... big G's name more than a few times. ( He uses "fuck" a lot, so he probably has "blasphemed" many times as well.
Page 15 - Brilliant!
Page 16 - Rewrite the defecation bit (to something else) - I don't think it says what you're trying to say.
Page 19 - This is better re the coffee.
Simon looks back towards the living room. He looks to the backdoor. He moves silently, and tries the door handle. Locked. He looks towards the hallway.
MR MIRTIS (O.C)
You won't get out the front door either.
Page 21- molecular structure? Build up doesn't work for me.
No, you won't feel a thing. Well, maybe just a little discomfort...
Page 23 - (pointing)
Page 24 -
MR MIRTIS
... roughly one hundred and fifty thousand people die each day Simon.
SIMON
So you have helpers then?
MR MIRTIS
You lot mainly. Drugs, alcohol, fast cars, and viagra all help, but yes, I'm pretty busy, seven days a week - no rest for the wicked eh? But I love my job... If I ever find out who came up with Grim Reaper...
....
SIMON
...It's not fair...
MR MIRTIS
Nothings fair Simon. But we've done all the paperwork now. Just relax, forget about it. Go... get your shopping, and go home and enjoy your pancakes. This will all be over before you know it.
Mr Mirtis breaks into song and dance - to the tune "Hakuna Matata" from the Lion King.
MR MIRTIS
"It means no worries for the rest of your days...."
SIMON
...No worries?
MR MIRTIS
... "Hakuna Matata!"
I LOVE IT! GREAT WRITING!
EDIT: Just one thing I forgot - IMO - you need to go through and change a few commas to full stops. Break the sentences up into natural action breaks.
A few bits need to be dropped down to the next 2 line paragraph (just like I've done here) re they are separate action, and need to be spaced slightly for good timing.