...You can't assume that the molotov exploded at all, my good man, let alone where or when... That's up to the GM... This here's rules-based, not freeform...
We get to say what we want our characters to do and the GM tells us whether or not those actions are successful or end in miserable, life ending failure...
For example: My post basically indicates that Murph's expecting that the molotov's going to explode and is anticipating having to still shoot the charging zombie all while trying to back himself out of what he figures the blast radius will be
if the molotov explodes... then, in my little OOC comment, I added a bit of detail as to what Murph's actions would be thereafter... (cuz I'm not sure how many rounds t_catt might cover before he wants our next actions).
Like the man said earlier... never assume anything...
Edit: Just cuz I won't be able to sleep without knowing I at least brought it up... I've played in a game or two of Olan's before and, based on the posted actions I can almost assume what's liable to happen, next...
If the molotov explodes, Murph's liable to get singed a little (he's trying to get out of the way
and keep himself between the zombie and the rest of you)... If Alaster keeps going with his charge there's the possibility that a) he'll get singed (or roasted), too, b) he'll run into the line of fire of Murph's shotgun and possibly get shot
if he runs past at the wrong time, c) he'll get to the zombie at the same time as the molotov and *sizzle sizzle*, or d) any combo of these.
So, worst case scenario, Murph can't fall back far enough because Alaster's charging the zombie... the zombie gets too close for Murph to delay pulling the trigger any longer for the sake of the others, Alaster steps in front of the blast hoping to mash the zombie's brains in, the molotov hit's and
does explode. Murph and Alaster are flame broiled zombie snacks, the party's down one shot gun and about 25 rounds of ammo that would've come in handy, not to mention, two people down in overall numbers.
Honestly, I'd really recommend editing a bit (leaving the assumptions out) but I'm not gonna say "Do it!" If that's what you think Alaster would do in the situation, leave it as is... but don't say I didn't waaaaaaarn ya...
Again, not trying to be bossy... just helpful...