Welcome to Canada

Spenser and Susan exit a fictional restaurant (where the waiter is Daniel Parker playing a character named Spike) and walk down the sidewalk.  Practically next door is "il fortello," a chain with nine locations in the greater Toronto area.  I couldn't find enough information online to identify which one it was but Boston it ain't.

It's the unrated version for release to foreign markets

I have the original on VHS and it was made for the US television market.  This one has exactly six scenes of naked breasts featuring three different women (I pride myself on attention to detail while doing this research.)

Non-book plot points:

• April's father is planning to run for governor of Massachusetts and the bad guys are keeping her to use as leverage.

• Her mother hates what she has done to her father's ambitions.

• April winds up turning her life around as a good little girl ashamed of that period in her life. 

Trying-to-be-Boston idea:

Spike (played by Daniel Parker, son of Robert B. and Joan H.) is a waiter at a restaurant called "Quotes." It's pretty obviously based on Durgin-Park, with a reputation for rude waitresses that's devolved into an inside joke.

Durgin Park
340 Faneuil Hall Market Pl
Boston, MA 02109

"For huge portions of delicious food, a rowdy atmosphere where CEOs share tables with students, and run-ins with the famously cranky waitresses, people have poured into Durgin-Park since1827. It's everything it's cracked up to be -- a tourist magnet that attracts many locals, where everyone's disappointed when the waitresses are nice, as they often are. Approximately 2,000 people a day join the line that stretches down a flight of stairs to the first floor of Faneuil Hall Marketplace's North Market building."