She believes she has an airtight story about all the events that led to her cousin's death, but Steffy's (Jacqueline MacInnes Wood) account about what led to Aly's death will start being questioned on The Bold and the Beautiful.

Liam Makes His Decision Between Ivy & Steffy

Ivy (Ashleigh Brewer) and Wyatt (Darin Brooks) are the only two who actually know that Aly didn't randomly fall during her attack on Steffy and just hit her head on a rock, but Thorne (Windsor Harmon), in a search for answers about what happened, will start to express his own doubts that things unfolded in that exact way.

"My little girl falls down, hits her head and she's dead. Tell me...tell me how that happened?" he says to Wyatt in a preview clip for the Wednesday, July 29 episode.

The Forresters Say Their Goodbyes To Aly

Because he is starting to doubt the story, Thorne will then confront Steffy, accusing her of covering something up.

"I don't believe you.I don't believe that Aly just fell, hit her head, and died. I don't believe it!" he shouts at her in the clip.

However, what Thorne doesn't realize is that actual proof does exist which proves Steffy did play a role in Aly's death. When she came upon the scene, Ivy videotaped it--and caught Steffy, in an act of self-defense against Aly's attack, grabbed a tire iron and swung it at her cousin. The impact caused Aly to fall and hit her head on the rock.

And now, especially after Liam (Scott Clifton) chose Aly's memorial service to dump Ivy in favor of Steffy, she will be more motivated than ever to try and prove that Steffy was responsible for Aly no longer being around.

"Aly didn't die because she fell and hit her head on a rock, she died because Steffy killed her!" Ivy says to Wyatt in the clip.

The Bold and the Beautiful airs Monday-Friday at 1:30 p.m. on ABC.

Tags: The Bold and the Beautiful CBS Soap Operas