It's Monday, June 15, 1992 and summer has started early in Worcester.

It's around 12:45 p.m.. Temperatures have reached a high of 75 degrees. Worcester's public schools are already dismissed for summer vacation and Main Street is buzzing.

Children and adults alike are outside in Worcester's Main South neighborhood enjoying the sunny weather, completely unaware of the dozen or so Worcester police cruisers heading their way.

A young boy walking his dog down Lagrange Street has just made an alarming discovery.

At the corner of Lagrange and Main Streets, on a strip of lawn behind a Sunoco gas station, the boy found the body of 39-year-old Richard Gragowski behind a row of bushes among old mattresses and empty wine bottles.

Richard had been bludgeoned to death. His skull had been crushed. His body had been sitting there in the sun for hours.

It's 2:15 in the afternoon on Wednesday, June 5, 2019.

Temperatures have peaked, reaching nearly 80 degrees on an overcast day in Worcester.

Police are called to Early's towing on Park Avenue. A van had been towed to their lot minutes before. The smell coming from the van, and the hundreds of flies coming out of the van, convinced Early's staff to call the WPD.

When police arrived, an officer climbed inside the van and found a plastic storage container under boxes of clothes, bags of trash and other junk.

The detective lifted the container's lid to find the body of 56-year-old John Sousa crammed inside.

John had been missing for more than a month.

You won't find the name Travis Monroe listed among the Worcester Police Department's unresolved homicide cases.

On the morning of October 1, 2006, Travis' body was found lying in the road on Fales Street near the corner of Gunnarson Road in Worcester's Burncoat neighborhood.

Travis' death certificate states the immediate cause of his death was blunt impact to his head with skull fractures and brain lacerations.

The Worcester Police determined Travis' death to be the result of a hit-and-run.

The state's medical examiner's report states the cause of Travis' death is undetermined.

Travis' mother believes her 17-year-old son may have been beaten to death.

For 17 years, the truth behind Travis' death eludes them all. And his case remains unsolved.

Unsolved: Worcester returns for Season 5 on Tuesday, June 13.

The penultimate season will shine a light on 10 unsolved murder cases, including the unusual circumstances surrounding the death of 17-year-old Travis Monroe in 2006, a two-part episode special on the 50th anniversary of Worcester's deadliest fire, and our first look at the sinister acts of the Main South Woodsman nearly 20 years later.

New episodes will be released every Tuesday.

In today's special episode, we have the great opportunity of speaking with Bob Ward, reporter for Boston 25 News and host of New England's Unsolved.

Bob has been awarded multiple Boston/New England Emmy awards and a Massachusetts Associated Press Award during his extensive career.

Bob joined Boston 25 in 1996 and launched New England's Unsolved in early 1999. The show briefly ran as a podcast in 2017 and Bob received an Edward R. Murrow for his work on the New England's Unsolved podcast.

Bob shares with us how New England's Unsolved got its start, insight on the 2006 death of 17-year-old Travis Monroe in Worcester, and tells us why he thinks cold case and true crime podcasts and shows attract such large audiences.

It's the oldest unsolved murder case on file with the Worcester Police Department Detective Unit.

March 11, 1951.

20-year-old Irish immigrant Sean Goggin is gunned down inside the entrance of a home on Fairhaven Road in Worcester's Burncoat neighorhood.

Two men in trench coats, one wearing a handkerchief to cover his face, fired three shots into the Fairhaven Road home, with one bullet striking Sean in the chest and killing him.

As Sean slumped to the ground, the men ran off across the front lawn, hopped into a car and sped away.

More than 70 years later, the murder of Sean Goggin remains unsolved.

What would you do if someone sent you a text message of a photo of the corpse of a family member or loved one?

That's what happened to Carmen Rivera on Easter Sunday 2009.

Carmen was on her way to Saint Vincent Hospital in Worcester when she received a photo of her son, 25-year-old Luis Rosario, dead on a gurney at the hospital.

Luis had been shot twice in the chest outside of a house party on Hammond Street.

The photo of Luis dead at the hospital had been posted on social media with the caption, "Mission Accomplished."

Walter Palmer climbed one flight of stairs to the second floor of an apartment building at 16 Millbury Street in Worcester's Green Island Neighborhood.

It's Saturday evening, August 5,1989, Palmer was surprising his friend John Riley.

The door to John's studio apartment was locked, so Palmer used his spare key.

When he opened the apartment door, Palmer stood there in shock.

John Riley sat lifeless in his chair. A pool of blood was at John's feet.

John was murdered. He had been stabbed 29 times

It's the middle of the summer. Worcester, 1987.

30-year-old Patricia Evans has just returned to the city after spending a month in a detox center in Springfield.

For over five years now, Patricia has been back and forth, in and out of treatment centers across the state.

The constant battle with her addiction to drugs had taken its toll on the young mother of four.

But leaving detox this time, there may have been some room for optimism.

But any optimism they may have existed, evaporated quickly. Just a month later, on August 8, 1987, Patricia was found dead in the empty apartment on the third floor above her family on Piedmont Street.

She was strangled to death.

It's around 2:15 a.m. on August 1, 2003.

Worcester's Main Street bars and clubs have closed for the night.

Kwaku Osei Owusu and four of his friends pile into his car parked at the corner of Portland Street and Franklin Street.

A sports car pulls up suddenly next to Kwaku's black sedan. Someone in the sports car points a gun in the direction of Kwaku and within an instant, 10 shots are fired into the driver's side of Kwaku's car.

Kwaku and the passenger next to him, 23-year-old Frank Vanney, are killed instantly.

When police arrive, they find Kwaku and Frank dead in the front seats. The car is riddled with bullet holes.