How to Get Away with Murder
Did Laurel Castillo kill Lila Stangard in ABC's legal drama 'How to Get Away with Murder?Facebook/How to Get Away with Murder

"How to Get Away with Murder" (HTGAWM) season finale is just days away and viewers are curious to know the real culprits behind the killing of Professor Sam Keating (Tom Verica) and his student Lila Stangard (Megan West).

But who killed Stangard has become the burning question of ABC's legal drama and episode 15 titled "It's All My Fault" will reveal the real reason behind her death. As of now, fans are convinced with the fact that Rebecca Sutter (Katie Findlay) is involved in the murder case but a new trailer released by ABC has fanned the curiosity of the viewers.

The 30-second-long clip shows a glimpse of Laurel Castillo (Karla Souza) in a mysterious situation indicating that she has lot more to reveal in the finale of "HTGAWM".

Even the official synopsis of episode 15 indicates that Wes Gibbins (Alfred Enoch), Connor Walsh (Jack Falahee), Michaela Pratt (Aja Naomi King) and Castillo may have dug themselves too deep a hole for Annalise Keating (Viola Davis) to save them.

Though it is not clear whether the title of the show "It's All My Fault" is a confession made by Castillo, Souza recently stated that the makers are planning for an alternative endings.

"We all called each other up and banged on each others' trailers when we got the final script. What we read left us breathless!" she told People Magazine.

However, it remains to be seen whether the culprits will manage to get away with murder or not.

Meantime, "HTGAWM" fans can watch the finale of their favourite show on ABC this Thursday, 26 February, at 10pm.