Three word game ...

[Fnaar]

instantly quadrupled, meaning

 

[classic33]

a tidy profit

 

[Fnaar]

for Mrs Terrible

 

[mistyoptic]

and her twins

 

[Fnaar]

Hubert and Ljudmila

 

[mistyoptic]

to spend on

 

[classic33]

just the three

 

[Wixsteman]

Plus the two

 

[classic33]

from next door

 

[Wixsteman]

Who never shut

 

[Paulus]

the front door

 

[classic33]

, at any time

 

[Wixsteman]

Of day or

 

[Fnaar]

early evening, when

 

[classic33]

factories changed shifts