These are advertising slogans which are short, often unforgettable expressions, used in advertising promotions. These are used in an effective way so that the audience can remember the product very easily. We have identified what makes an effective strapline of which is the following:
-states the key benefits of the product or brand for the potential user or buyer
implies a distinction between it and other firms' products - of course, within the usual legal constraints
-makes a simple, direct, concise, crisp, and apt statement
-is often witty
-adopts a distinct "personality" of its own
-gives a credible impression of a brand or product
-makes the consumer feel "good"
-makes the consumer feel a desire or need
-is hard to forget - it adheres to one's memory (whether one likes it or not), especially if it is accompanied by mnemonic devices, such as jingles, ditties, pictures or film sequences on televised commercials
-Sounds good.
*Examples of straplines are :

-28 days later - “His fear began when he woke up alone. his terror began when he realised he wasn’t.” this constrasts itself and gives a greater insight to the plotline.

-Seven- “Long is the way, and hard, that out of hell leads up to light.”
this links into a bibical passage which links into the plot of the film, if the audience do not realise that it isn’t a bibical passage it becomes very confusing.

-The Sixth Sense-”I see dead people"
this immediatley creates an enigma before the film has even started. this is because it’s impossible to see dead people. by doing this the creators of the film get the audience interested and engaged straight away.

-I am Legend- “The last man on earth is not alone”
this tagline immediately creates an enigma, it makes the audience question “why has it been mentioned that he’s the last man on earth” but then it contradicts itself by saying he is not alone.

-Panic Room- “It was supposed to be the safest room in the house”
again this makes the audience question to how it is mentioned that “it was supposed to be “ , why is not safe anymore. this links into the title , the panic known as place of refuge in times of danger. so the tagline vontradicts the purpose of the title of the film.

-The Pelican Brief- “Two Supreme Court Justices have been assassinated. One lone law student has stumbled upon the truth. An investigative journalist wants her story. Everybody else wants her dead.” this gives a greater insight into the plot and gives a short overview of the whole film.
Our own strap line will be one that gives credible impression of our film and will be a concise and simple statement so that it will be easily remembered.
We are going to meet the conventions of the thriller genre and opening sequences generally however we may challenge some conventions by immediately creating an enigma from the opening sequence, so that the audience are engaged and interested in the film immediately.