Baby Lisa's Family Mark Her First Birthday Privately

Missing Lisa Irwin turns 1 Friday, and as the investigation into her disappearance continues, her family will mark the day by reflecting in private.

“This is a very tough day for them,” one of the family’s attorneys, Joe Tacopina, said on Good Morning America of Lisa’s parents, Deborah Bradley and Jeremy Irwin.

Why Won't Baby Lisa's Parents Talk to Police?

Accused during police questioning in the disappearance of their missing daughter, the parents of 10-month-old Lisa Irwin want a new set of detectives to meet with them before they will agree to sit down for any further interrogation.

That’s the word from an attorney, Cyndy Short, who tells PEOPLE that her clients, parents Deborah Bradley and Jeremy Irwin, are on “an emotional roller coaster” as the search for Lisa hits Day 23.

Baby Lisa Case: Mystery Man in New Surveillance Video

Was the man seen walking post-midnight near the home of missing 11-month-old Lisa Irwin carrying a baby that did not belong to him?

Police won’t say, and Lisa’s parents don’t know. But that report, along with a second report of a man carrying a baby a short distance away around 4 a.m. on Oct. 4 – the time that Lisa was reported missing from her crib – is “unbelievably substantial,” says the attorney for parents Deborah Bradley, 25, and Jeremy Irwin, 29.

Baby Lisa Case: Cadaver Dog Picks Up Dead Body Scent in the Family Home

A cadaver dog searching the home of missing baby Lisa Irwin – who disappeared 17 days ago – has picked up the scent of a dead body in her parents’ bedroom, according to a newly released document in the case.

Baby Lisa's Mom: 'We Have Absolutely Nothing to Hide'

When Jeremy Irwin returned home from work in the early morning hours of Oct. 4, he found his fiancée, Debbie Bradley, and two sons asleep.

But when he peeked in on then 10-month-old daughter Lisa, her light was on and the crib was empty.

That, Irwin tells PEOPLE in this week’s cover story, “is when all hell broke loose.”

Elizabeth Smart on Baby Lisa: 'I Think She's Alive'

Now helping other kidnap victims with her foundation and in her role as an ABC News contributor covering missing person and child abduction cases, Elizabeth Smart was in Los Angeles Monday for the 6th annual Squeaky Wheel Tour kickoff, to help raise awareness on the 11th anniversary of singer-songwriter Gina Bos’s disappearance in Nebraska.

Parents 'Had Nothing to Do' with Baby Lisa's Disappearance, Says Lawyer

The parents of missing Baby Lisa have hired a high-profile lawyer, who quickly proclaimed their innocence and said they were focused on finding the 11-month-old girl.

Joseph Tacopina – who once represented Joran van der Sloot, the suspect in the Natalee Holloway disappearance – says that “there’s no question in my mind” that Lisa’s parents Deborah Bradley and Jeremy Irwin “had absolutely nothing to do with the disappearance of their baby girl.”

Deborah Bradley: I Was Probably Drunk When Baby Lisa Disappeared

On the night her 10-month-old daughter disappeared, Lisa Irwin’s mother drank enough wine at home while relaxing with a neighbor that she has no recollection of whether or not she checked on her daughter or turned off the house lights before she went to bed.

Did the alcohol cause her to black out? “It’s a possibility,” Deborah Bradley tells Fox News Channel.

Baby Lisa's Uncle Identified as Man in Surveillance Tape

The man seen on a surveillance tape shopping with Baby Lisa’s mother has been identified as the woman’s brother, according to a news report.

Deborah Bradley and her brother were purchasing wine for a family event at the Festival Foods near her home in Kansas City, Mo., family members tell KCTV5.

Mom Shopped with Mystery Man Night of Baby Lisa's Disappearance