A presentation in six steps
Dennis fills a large flip chart as he narrates his treatment of Caylee. The others watch from stools opposite the display.
Supporting source ↗CASE FILE · S05 E10
The D.E.N.N.I.S. System
S05 E10Photograph not available
Dennis tells the gang how he seduces women, but none of them can get the hang of it.
THE SHORT VERSION · SPOILERS AHEAD
INSIDE THE CASE.
Competing systems
Mac and Frank reveal their own plans to follow Dennis’s relationships. Their competing schedules undermine his attempted repeat performance.
Supporting source ↗Suspicion where none is needed
Dee treats Ben’s picnic as a trap. His ordinary kindness cannot survive her insistence that he must have a hidden strategy.
Supporting source ↗The fairground reunion
A wheelchair, lizard face paint and a baseball booth bring the separate stories together. Dennis’s demonstration ends in public disorder.
Supporting source ↗THE EVIDENCE
THINGS IN THIS EPISODE.
Characters
Ben the Soldier6 other recorded episodes
Ben wears green lizard face paint beside Dee.Source ↗
Charlie Kelly182 other recorded episodes
Charlie holds plumbing parts after being discovered beneath the Waitress’s sink.Source ↗
Dee Reynolds181 other recorded episodes
Dee waits beside Ben as his face painting is finished.Source ↗
Dennis Reynolds178 other recorded episodes
Dennis stands beside the completed six-step presentation.Source ↗
Frank Reynolds173 other recorded episodes
Frank joins the argument in the pharmacy aisle.Source ↗
Mac182 other recorded episodes
Mac explains his own role in the dating scheme at the pharmacy.Source ↗
The bandanna-wearing fair worker is approached by Dee.Source ↗
The Waitress38 other recorded episodes
The Waitress sits at the Speed Pitch booth in her striped uniform.Source ↗
Locations
Mac and Dennis’s apartment21 other recorded episodes
Dennis brings Caylee home during his narrated demonstration.Source ↗
Paddy’s Pub148 other recorded episodes
The presentation takes place beside the pool and foosball tables.Source ↗
Shelves of medicines and counter displays surround Caylee.Source ↗
The Waitress’s apartment2 other recorded episodes
Charlie works on the sink in the Waitress’s apartment.Source ↗
Objects
Blindfolds1 other recorded episode
Dee wears a bandana over her eyes during the outing with Ben.Source ↗
Charlie holds a dismantled sink drain while working in the Waitress’s apartment.Source ↗
Eyeglasses15 other recorded episodes
Mac wears glasses as part of his attempted intellectual presentation to Caylee.Source ↗
Flip charts2 other recorded episodes
The large paper pad displays the completed D.E.N.N.I.S. acronym.Source ↗
Landline phones6 other recorded episodes
A corded telephone sits behind the pharmacy counter.Source ↗
Frank displays his supplies for pursuing Caylee.Source ↗
Charlie brings hair to interfere with the Waitress’s disposal.Source ↗
Wheelchairs2 other recorded episodes
Gladys rides through the fair in a wheelchair.Source ↗
Food & drinks
Schemes
Impersonation8 other recorded episodes
Dennis presents Gladys as his grandmother to manipulate Caylee.Source ↗
The D.E.N.N.I.S. System4 other recorded episodes
Six labeled steps appear on Dennis’s presentation pad.Source ↗
Mac explains that he pursues women after Dennis leaves them.Source ↗
Costumes
Dr. Mantis Toboggan2 other recorded episodes
Frank invents a medical diagnosis while posing as Dr. Mantis Toboggan.Source ↗
Face paint3 other recorded episodes
Ben’s face is painted green with a lizard design.Source ↗
Miscellaneous
The booth’s sign identifies its baseball-throwing game.Source ↗
FOLLOW THE THREAD
CONNECTED EPISODES.
S04 E13 Connected through Gladys, Eyeglasses, The Waitress and 6 more.
S02 E04 
Connected through The Waitress’s apartment, Landline phones, The Waitress and 6 more.
S07 E11 
Connected through Payphones, Paddy’s Pub, Frank Reynolds and 4 more.
S12 E07 
Connected through Blindfolds, Paddy’s Pub, Frank Reynolds and 4 more.
SOURCES & NOTES.
Tags document researched occurrences, not every appearance. Read the research notes and attribution.