Solution to Intercept
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Booth
inventory > watch & card; look watch > 346;
go booth; dial three; dial four; dial six; get out;
show pass (to guard); n
open decanter > stopper;
e; get hammer & pen;
w, s; go elevator; dial 346 as before; s
go car; open compartment > flashlight; get flashlight
put shift, in drive; drive e; put shift, in park; get out;

Eerie Mansion
pull bell;
get shovel; climb crate > crate breaks in; get oilcan; get out;
[drop shovel, watch - you don't need them]
go steps; look door; look hinge; look pins;
oil pins (with oilcan); pull pins (with hammer); open door;
go doorway; e;
look niche > statue. look statue > key. get key
go stairs; light flashlight; look desk > Page 1;
extinguish flashlight (otherwise bats attack); get page; s;
turn statue > opening ; go opening
get suction cups; look fusebox > fuse; pull fuse (to kill power & spider);
s, w, n
look spider > switch; push switch (to turn off spider only)
s, e, go opening
replace fuse (to turn on power, so that case may be opened)
s, w, n, n
push button > case opens; get tube & beaker;
look tube; pour acid, in beaker;
cover beaker (with stopper, otherwise acid spills when you climb the chute)
s, s, go door, d, go chute (with suction cups, otherwise you slide down)
return to car & drive w, w, n;

Theatre
go door; go stairway;
look seat > bottle;
d; go entry;
show card (to usher); pour acid, on padlock > melts padlock
go door; go stair; go catwalk; go ladder
break bottle (with hammer); cut ropes (with broken bottle) > rope
return to car & drive s, e, e;

Cottage
put shift, in neutral; get out; push car > manhole cover;
get cover > manhole; tie rope, to bumper; drop rope;
go manhole; pull lever; climb rope;
remove shoes (otherwise agent hears your shoes squeak); go door;
frisk agent > wallet; look wallet > card #622
go closet; push wall > safe; look safe > dial;
(turn dial) left (to) six; right two; left two;
insert card (in slot) > open safe; look safe > page 2

Theatre (Stage Left)
(once you get the 2nd page, there's an actor here)
shoot actor (with pen); search actor > formula booklet; get booklet

Booth (Chief's Office)
drop booklet


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Solved by Ambat Sasi Nair
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Special thanks to Tim Keller for help in discovering the safe!