Watch "The Big Story Weekend" Saturday and Sunday at 9 p.m ET

Saturday, June 18

We'll have the latest from Aruba as authorities continue their search for missing honor student Natalee Holloway (search). Does the arrest of a fourth suspect mean investigators are close to cracking this case? We'll ask former NYPD Detective Gil Alba.

Authorities already have detained 17-year-old Joran van der Sloot (search), the son of a Dutch justice official on Aruba, and his two friends, Surinamese brothers Deepak Kalpoe (search), 21, and Satish Kalpoe (search), 18. But why has no one has been charged with a crime in the case? We'll ask David Kock, the attorney representing the Kalpoe brothers.

Plus, who is Joran van der Sloot and would he do the unthinkable? Van der Sloot's friend, Jamie Carrasquilla, shares his thoughts.

Then, we'll talk to the manager of Carlos n' Charlie’s (search), the popular nightclub where Natalee spent her last night before disappearing from the island. Beto Levy joins "Big Story Weekend."

And, where were the chaperones the night Natalee went missing? How could they allow something like this to happen? We'll ask Jodi Bearman, who organized the trip for the 136 Mountain Brook, Ala., high school graduates.

Plus, prosecutors offer a plea deal to former middle school teacher Debra Lafave (search), who faces up to 30 years in prison if convicted on sexual battery charges that stem from an alleged affair with her 14-year-old student. Her ex-husband, Owen Lafave, weighs in on her insanity defense.

Sunday, June 19

The search for Natalee Holloway continues in Aruba. Our guests tonight include:

Ruben Trapenberg, Aruban government spokesman

Marianne Croes, prosecutor's spokesperson

Lincoln Gomez, an Aruban attorney

Julie Renfro, editor of Aruba Today newspaper

David Kock, attorney for the Kalpoe brothers

Elvis Weert, Top 95 Aruba

Hubart Tear, reporter for Aruba's El Diario newspaper

Rod Wheeler, former D.C. homicide detective

Dr. Michael Baden, forensic pathologist

Real journalism: fair and balanced. That's why we're No. 1 — FOX News Channel.